Stock fuel pump to small (test results)
#1
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Thread Starter
Stock fuel pump to small (test results)
Wanted to do live road test VS dyno and make sure I was under real time load.. It is 90 deg and the DA near 3000 ft these days, so in cold weather fuel demand will be higher..
I filled up with gas (23 gallons) to help get traction but no help.. Pulled out of station and rolled into it at 30 mph and spun like crazy. Saw pressure pressure drop 10PSI and I let out of it.. Then did two rolls from 45mph (bottom of second) ,, Pressure looked to hold, then at 5K is dropped like a rock to 65-68 PSI. As most of you know, a 2-3 psi drop is bad but this much is a serious problem..
I suggest anyone with most the bolt ons, check fuel PSI ASAP and do what you need to do to keep your motor safe.. This test took less that 20 minutes to hook up gauge and do a couple quick driving test..
This is just a fuel gauge taped to the wiper test.. Don`t laugh, it works well.. Idle and cruise pressure shows to be 78.5 ish on this gauge..
I am going to ADD a Bosch inline 44 pump to replace my stock inline pump and then re-test pressure..
I filled up with gas (23 gallons) to help get traction but no help.. Pulled out of station and rolled into it at 30 mph and spun like crazy. Saw pressure pressure drop 10PSI and I let out of it.. Then did two rolls from 45mph (bottom of second) ,, Pressure looked to hold, then at 5K is dropped like a rock to 65-68 PSI. As most of you know, a 2-3 psi drop is bad but this much is a serious problem..
I suggest anyone with most the bolt ons, check fuel PSI ASAP and do what you need to do to keep your motor safe.. This test took less that 20 minutes to hook up gauge and do a couple quick driving test..
This is just a fuel gauge taped to the wiper test.. Don`t laugh, it works well.. Idle and cruise pressure shows to be 78.5 ish on this gauge..
I am going to ADD a Bosch inline 44 pump to replace my stock inline pump and then re-test pressure..
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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#3
Nice Brooke and thanks for sharing the results!
I also see the same conditions but never had anything to really compare it to. I would really like to see what a stock E55 does, I bet we'll still see a slight drop.
I also see the same conditions but never had anything to really compare it to. I would really like to see what a stock E55 does, I bet we'll still see a slight drop.
#4
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Thanks Shardul. We will check yours and Hadilaw car next..
I would assume our pumps (although different) are rated pretty close in flow capacity. No need on us working on injectors, until we can hold solid stable PSI.. Good news is, that a pump may fix all our fuel issues up to our mods HP range.. I have an extra 8% fuel added into my tune above 5K and when I hold 78-80 psi, going to be filthy rich! So, will have to re-tune to level out the A/F again.
I would assume our pumps (although different) are rated pretty close in flow capacity. No need on us working on injectors, until we can hold solid stable PSI.. Good news is, that a pump may fix all our fuel issues up to our mods HP range.. I have an extra 8% fuel added into my tune above 5K and when I hold 78-80 psi, going to be filthy rich! So, will have to re-tune to level out the A/F again.
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
#5
Thanks Shardul. We will check yours and Hadilaw car next..
I would assume our pumps (although different) are rated pretty close in flow capacity. No need on us working on injectors, until we can hold solid stable PSI.. Good news is, that a pump may fix all our fuel issues up to our mods HP range.. I have an extra 8% fuel added into my tune above 5K and when I hold 78-80 psi, going to be filthy rich! So, will have to re-tune to level out the A/F again.
I would assume our pumps (although different) are rated pretty close in flow capacity. No need on us working on injectors, until we can hold solid stable PSI.. Good news is, that a pump may fix all our fuel issues up to our mods HP range.. I have an extra 8% fuel added into my tune above 5K and when I hold 78-80 psi, going to be filthy rich! So, will have to re-tune to level out the A/F again.
I now have 55k on my motor and I think it's time to replace my pump and filters. I know of a member that was having some severe fuel issues and after replacing most of his fuel system he no longer starved for fuel. At this time this might be my best alternative until someone gets a boost-a-pump to work in our cars.
#6
MBWorld Fanatic!
Thanks Shardul. We will check yours and Hadilaw car next..
I would assume our pumps (although different) are rated pretty close in flow capacity. No need on us working on injectors, until we can hold solid stable PSI.. Good news is, that a pump may fix all our fuel issues up to our mods HP range.. I have an extra 8% fuel added into my tune above 5K and when I hold 78-80 psi, going to be filthy rich! So, will have to re-tune to level out the A/F again.
I would assume our pumps (although different) are rated pretty close in flow capacity. No need on us working on injectors, until we can hold solid stable PSI.. Good news is, that a pump may fix all our fuel issues up to our mods HP range.. I have an extra 8% fuel added into my tune above 5K and when I hold 78-80 psi, going to be filthy rich! So, will have to re-tune to level out the A/F again.
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#8
Sneakyneon tried a single Kenne Bell boost-a-pump and since we have to pumps it didn't work properly. I also contacted Corey from Kleeman and his only recommendation was to switch to SLR injectors. I would much rather fix the drop in PSI's through the pump if possible like others have mentioned.
#9
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Based on my past tune days, I feel I have had fuel issues for a while. It seems getting the top 500 rpm rich enough, has been challenging. Even with stock manifolds. It really showed with the change to the 185mm..
I feel this bosch 44 pump will take care of the pressdure but not sure if it will operate at the 80psi we need for our injectors... Anyone know if the 44 will show 80 psi at the rail???? Specs listed below..
If the e55 was two external pumps, then one should be a low pressure pump and the other a hiogh pressure? If so, why not just put two pumps in thier place. Simulair to what sneakyneon did? An easy test/fix may be to just add another inline pump after your stock pumps.. The integrated filter is still a problem..
I should be able to change my pump in about 15 minutes, once I have all the parts.. Then I will post results..
Bosch 044 Fuel Pump Specs:
Bosch Part Number: 0 580 254 044
Minimum Current: 12 Volts
Operating Pressure: 72.5 PSI (5 Bar)
Minimum Flow @ Outlet: 80 GPH (300 LPH)
Fuel Pump Location: In-Line
High Temperature Reduction: 8 GPH (30 LPH)
Weight: 1030 Grams (2.27 Pounds)
Fuel Pump Connections:
Inlet: M18 x 1.5
Outlet: M12 x 1.5
Electrical: Positive M6 / Negative M5
$219.99
I feel this bosch 44 pump will take care of the pressdure but not sure if it will operate at the 80psi we need for our injectors... Anyone know if the 44 will show 80 psi at the rail???? Specs listed below..
If the e55 was two external pumps, then one should be a low pressure pump and the other a hiogh pressure? If so, why not just put two pumps in thier place. Simulair to what sneakyneon did? An easy test/fix may be to just add another inline pump after your stock pumps.. The integrated filter is still a problem..
I should be able to change my pump in about 15 minutes, once I have all the parts.. Then I will post results..
Bosch 044 Fuel Pump Specs:
Bosch Part Number: 0 580 254 044
Minimum Current: 12 Volts
Operating Pressure: 72.5 PSI (5 Bar)
Minimum Flow @ Outlet: 80 GPH (300 LPH)
Fuel Pump Location: In-Line
High Temperature Reduction: 8 GPH (30 LPH)
Weight: 1030 Grams (2.27 Pounds)
Fuel Pump Connections:
Inlet: M18 x 1.5
Outlet: M12 x 1.5
Electrical: Positive M6 / Negative M5
$219.99
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
#10
MBWorld Fanatic!
This makes sense and that's why I'm curious to know what a stock E55 would look like. Like I mentioned in my first post, I wouldn't be surprised if we see the same drop in fuel pressure. Is it just coincidental that we all see the same drop in pressure with varying mods?
Sneakyneon tried a single Kenne Bell boost-a-pump and since we have to pumps it didn't work properly. I also contacted Corey from Kleeman and his only recommendation was to switch to SLR injectors. I would much rather fix the drop in PSI's through the pump if possible like others have mentioned.
Sneakyneon tried a single Kenne Bell boost-a-pump and since we have to pumps it didn't work properly. I also contacted Corey from Kleeman and his only recommendation was to switch to SLR injectors. I would much rather fix the drop in PSI's through the pump if possible like others have mentioned.
What did sneakyneon do to his fuel system?
#11
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'04 E55 AMG
Based on my past tune days, I feel I have had fuel issues for a while. It seems getting the top 500 rpm rich enough, has been challenging. Even with stock manifolds. It really showed with the change to the 185mm..
I feel this bosch 44 pump will take care of the pressdure but not sure if it will operate at the 80psi we need for our injectors... Anyone know if the 44 will show 80 psi at the rail???? Specs listed below..
If the e55 was two external pumps, then one should be a low pressure pump and the other a hiogh pressure? If so, why not just put two pumps in thier place. Simulair to what sneakyneon did? An easy test/fix may be to just add another inline pump after your stock pumps.. The integrated filter is still a problem..
I should be able to change my pump in about 15 minutes, once I have all the parts.. Then I will post results..
Bosch 044 Fuel Pump Specs:
Bosch Part Number: 0 580 254 044
Minimum Current: 12 Volts
Operating Pressure: 72.5 PSI (5 Bar)
Minimum Flow @ Outlet: 80 GPH (300 LPH)
Fuel Pump Location: In-Line
High Temperature Reduction: 8 GPH (30 LPH)
Weight: 1030 Grams (2.27 Pounds)
Fuel Pump Connections:
Inlet: M18 x 1.5
Outlet: M12 x 1.5
Electrical: Positive M6 / Negative M5
$219.99
I feel this bosch 44 pump will take care of the pressdure but not sure if it will operate at the 80psi we need for our injectors... Anyone know if the 44 will show 80 psi at the rail???? Specs listed below..
If the e55 was two external pumps, then one should be a low pressure pump and the other a hiogh pressure? If so, why not just put two pumps in thier place. Simulair to what sneakyneon did? An easy test/fix may be to just add another inline pump after your stock pumps.. The integrated filter is still a problem..
I should be able to change my pump in about 15 minutes, once I have all the parts.. Then I will post results..
Bosch 044 Fuel Pump Specs:
Bosch Part Number: 0 580 254 044
Minimum Current: 12 Volts
Operating Pressure: 72.5 PSI (5 Bar)
Minimum Flow @ Outlet: 80 GPH (300 LPH)
Fuel Pump Location: In-Line
High Temperature Reduction: 8 GPH (30 LPH)
Weight: 1030 Grams (2.27 Pounds)
Fuel Pump Connections:
Inlet: M18 x 1.5
Outlet: M12 x 1.5
Electrical: Positive M6 / Negative M5
$219.99
i have used the bosch 044 pump on hondas plenty of times and they are good to 150psi. 80psi is no problem for it.
#12
Sneakyneon is working on a huge project that is very involved. I'm sure the end result will be nothing short of stellar. I'll let him chime in and explain his project.
#13
If voltage drop at the pump is a problem,instead of spending a bunch of money on a BAP(crap IMO),use a hotwire kit for the fuel pump.You could even make your own taking power off the back of the alt(the highest voltage spot u can pickup from)Running 10awg wire from the back of the alt to the fuel pump positive wiring will cure any problem with voltage to the pump if there is a problem to start with.
A Bosch 044 will not flow well at 80psi.There are specs out there online.Grand National guys have found this out years ago,044's have higher psi volume drop starting around 75#.
I wouldnt think the e55's pumps would be a low pressure and high pressure,id think theyd both be high pressure pumps.
A Bosch 044 will not flow well at 80psi.There are specs out there online.Grand National guys have found this out years ago,044's have higher psi volume drop starting around 75#.
I wouldnt think the e55's pumps would be a low pressure and high pressure,id think theyd both be high pressure pumps.
Last edited by broke1; 06-28-2010 at 12:58 AM.
#14
MBWorld Fanatic!
Some cool FYI on what your talking about but on the new AMG V8 bi turbo engine
http://www.mercedes-amg.com/#/157v8
go to the direct fuel injection bit and you will see talk of 2 pumps
1 low
1 high
http://www.mercedes-amg.com/#/157v8
go to the direct fuel injection bit and you will see talk of 2 pumps
1 low
1 high
#15
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Thread Starter
Ok, then what pump do you use, that will alolow for 80psi from the regulator but still have a strong LPH? The pumps that work at 80 psi plus, all drop off on the LPH flow?
Ok, then what pump do you use, that will alolow for 80psi from the regulator but still have a strong LPH? The pumps that work at 80 psi plus, all drop off on the LPH flow? I was wishing that the 44 pump was under rated and would hold the 80 psi, especially since it is feed by and intank pump already..
If voltage drop at the pump is a problem,instead of spending a bunch of money on a BAP(crap IMO),use a hotwire kit for the fuel pump.You could even make your own taking power off the back of the alt(the highest voltage spot u can pickup from)Running 10awg wire from the back of the alt to the fuel pump positive wiring will cure any problem with voltage to the pump if there is a problem to start with.
A Bosch 044 will not flow well at 80psi.There are specs out there online.Grand National guys have found this out years ago,044's have higher psi volume drop starting around 75#.
I wouldnt think the e55's pumps would be a low pressure and high pressure,id think theyd both be high pressure pumps.
A Bosch 044 will not flow well at 80psi.There are specs out there online.Grand National guys have found this out years ago,044's have higher psi volume drop starting around 75#.
I wouldnt think the e55's pumps would be a low pressure and high pressure,id think theyd both be high pressure pumps.
Ok, then what pump do you use, that will alolow for 80psi from the regulator but still have a strong LPH? The pumps that work at 80 psi plus, all drop off on the LPH flow? I was wishing that the 44 pump was under rated and would hold the 80 psi, especially since it is feed by and intank pump already..
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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instagram @ultimate_pd
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#16
MBWorld Fanatic!
Just a thought. It would be just as easy to test voltage and amperage to the pump. If someone is bored they could throw on a data logger and grab fuel pressure, voltage to pump, rpm, % open throttle, mph and some more.
#17
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CLK63, CLK 55 kleemann, Nissan GTR N1
I have used Bosch 044 motorsport pumps many times and have found them to be very reliable but very noisy.
The one thing that effects fuel pump pressure and volume delivery is applied voltage which you can see from the bosch charts.
If you use data logging you will notice that fuel pump pressure will vary with battery voltage fluctuations and can cause the engine to lean out.
A constant voltage power supply to the fuel pump will fix this.
The one thing that effects fuel pump pressure and volume delivery is applied voltage which you can see from the bosch charts.
If you use data logging you will notice that fuel pump pressure will vary with battery voltage fluctuations and can cause the engine to lean out.
A constant voltage power supply to the fuel pump will fix this.
#18
Member
Wanted to do live road test VS dyno and make sure I was under real time load.. It is 90 deg and the DA near 3000 ft these days, so in cold weather fuel demand will be higher..
I filled up with gas (23 gallons) to help get traction but no help.. Pulled out of station and rolled into it at 30 mph and spun like crazy. Saw pressure pressure drop 10PSI and I let out of it.. Then did two rolls from 45mph (bottom of second) ,, Pressure looked to hold, then at 5K is dropped like a rock to 65-68 PSI. As most of you know, a 2-3 psi drop is bad but this much is a serious problem..
I suggest anyone with most the bolt ons, check fuel PSI ASAP and do what you need to do to keep your motor safe.. This test took less that 20 minutes to hook up gauge and do a couple quick driving test..
This is just a fuel gauge taped to the wiper test.. Don`t laugh, it works well.. Idle and cruise pressure shows to be 78.5 ish on this gauge..
I am going to ADD a Bosch inline 44 pump to replace my stock inline pump and then re-test pressure..
I filled up with gas (23 gallons) to help get traction but no help.. Pulled out of station and rolled into it at 30 mph and spun like crazy. Saw pressure pressure drop 10PSI and I let out of it.. Then did two rolls from 45mph (bottom of second) ,, Pressure looked to hold, then at 5K is dropped like a rock to 65-68 PSI. As most of you know, a 2-3 psi drop is bad but this much is a serious problem..
I suggest anyone with most the bolt ons, check fuel PSI ASAP and do what you need to do to keep your motor safe.. This test took less that 20 minutes to hook up gauge and do a couple quick driving test..
This is just a fuel gauge taped to the wiper test.. Don`t laugh, it works well.. Idle and cruise pressure shows to be 78.5 ish on this gauge..
I am going to ADD a Bosch inline 44 pump to replace my stock inline pump and then re-test pressure..
#19
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Nice work Brooke, you would want to stay around the 73psi mark under heavy load, while doing these runs are you checking your injector duty cycle? If the injectors are open they will also cause your pressure to drop along with voltage don't forget to take all these measures under consideration.
Not sure if the Bosch 044 will hold up to what you need but look into Areomotive inline pump. They are loud but it they will get the job done.
Hope that helps some
Not sure if the Bosch 044 will hold up to what you need but look into Areomotive inline pump. They are loud but it they will get the job done.
Hope that helps some
#20
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Thread Starter
Not sure if the Bosch 044 will hold up to what you need but look into Areomotive inline pump. They are loud but it they will get the job done.
The Areomotive is a damn nice pump and has Russian race horse flow specs! I just don`t like noise .. If the Bosch does not work or hold 80psi, then larger injectors are going in,, as I do not want to mess with the intank pump either..I have no idea what it limits are either..
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
#22
PLATINUM SPONSOR
Thread Starter
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
#23
Super Member
I'm not at all surprised by this findings, this what I saw on the dyno with my car.
The stock voltage at idle is 13.5-14.0 This is not out of a book but straight from my multimeter. I would not assume that the voltage would drop at higher RPM unless there is a wot cut out for the alt. (I doubt it).
I tried a single 40 amp BOP and it would blow the fuse every time, I tried it on one pump and both with same results. I sent it back to kenne bell and they could find nothing wrong with it
If going to a 044 pump I would think it’s going to need to be before the regulator so the regulator can do its job.
On the E55 this is near impossible with the pumps and regulator in tank.
My solution was way over the top; with 2 bosch 044 pumps modified rail and aftermarket regulator and return line. I have been working on mine for what seems forever but I should have it button up tomorrow (fingers crossed) I'm sure there going to be a whole slew of complications but I'll start a thread with pics and photos.
The bosch are known to be good to around 600 whp but I have no idea of what the pressure is unregulated.
The stock voltage at idle is 13.5-14.0 This is not out of a book but straight from my multimeter. I would not assume that the voltage would drop at higher RPM unless there is a wot cut out for the alt. (I doubt it).
I tried a single 40 amp BOP and it would blow the fuse every time, I tried it on one pump and both with same results. I sent it back to kenne bell and they could find nothing wrong with it
If going to a 044 pump I would think it’s going to need to be before the regulator so the regulator can do its job.
On the E55 this is near impossible with the pumps and regulator in tank.
My solution was way over the top; with 2 bosch 044 pumps modified rail and aftermarket regulator and return line. I have been working on mine for what seems forever but I should have it button up tomorrow (fingers crossed) I'm sure there going to be a whole slew of complications but I'll start a thread with pics and photos.
The bosch are known to be good to around 600 whp but I have no idea of what the pressure is unregulated.
#24
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Thread Starter
I'm not at all surprised by this findings, this what I saw on the dyno with my car.
The stock voltage at idle is 13.5-14.0 This is not out of a book but straight from my multimeter. I would not assume that the voltage would drop at higher RPM unless there is a wot cut out for the alt. (I doubt it).
I tried a single 40 amp BOP and it would blow the fuse every time, I tried it on one pump and both with same results. I sent it back to kenne bell and they could find nothing wrong with it
If going to a 044 pump I would think it’s going to need to be before the regulator so the regulator can do its job.
On the E55 this is near impossible with the pumps and regulator in tank.
My solution was way over the top; with 2 bosch 044 pumps modified rail and aftermarket regulator and return line. I have been working on mine for what seems forever but I should have it button up tomorrow (fingers crossed) I'm sure there going to be a whole slew of complications but I'll start a thread with pics and photos.
The bosch are known to be good to around 600 whp but I have no idea of what the pressure is unregulated.
The stock voltage at idle is 13.5-14.0 This is not out of a book but straight from my multimeter. I would not assume that the voltage would drop at higher RPM unless there is a wot cut out for the alt. (I doubt it).
I tried a single 40 amp BOP and it would blow the fuse every time, I tried it on one pump and both with same results. I sent it back to kenne bell and they could find nothing wrong with it
If going to a 044 pump I would think it’s going to need to be before the regulator so the regulator can do its job.
On the E55 this is near impossible with the pumps and regulator in tank.
My solution was way over the top; with 2 bosch 044 pumps modified rail and aftermarket regulator and return line. I have been working on mine for what seems forever but I should have it button up tomorrow (fingers crossed) I'm sure there going to be a whole slew of complications but I'll start a thread with pics and photos.
The bosch are known to be good to around 600 whp but I have no idea of what the pressure is unregulated.
By searching my STAR manual, I found some interesting info.. Not sure how or if this applies to other 55`s but should help.. It seems the Cl55 may have a BAP built in already..
Sneakyneon, glad you mentioned about the regualtor being in the tank, as I just found my is external under the tank.. Not sure how that will affect or control pressure from my high pressure pump now, as it will be rated at 72.5 psi, unless it is regulated somehow. Not sure how though..
Here is a pic. of the CL55 external tank regulator. I guess that may be easy to change and just increase pressure some???
Here is the info on the voltage control unit to maintain a constant 5bar.. Well no if you add to much power..hehe
Here is the sensor that controls pump voltage. I would say this is a built in boost a pump, in a sense.. Hope it regulates the bosch 44 from its 72.5 rated psi.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Last edited by Exotic-metal55; 06-28-2010 at 10:20 PM.
#25
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Anyone figure out yet if the E55 has a ECU controlled fuel pressure control unit? How about a fuel pressure sensor? This would be an important fact to figure out how the stock pumps work.. Why would they both be high pressure?
If the pressure is dropping and fuel pumps are hard to change, then add another high pressure pump inline but figure out how the pumps work..
My pump should be here next week and my trunk tank too. Lot of test coming up!
If the pressure is dropping and fuel pumps are hard to change, then add another high pressure pump inline but figure out how the pumps work..
My pump should be here next week and my trunk tank too. Lot of test coming up!