Fuel rail/Injector question
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From: California
2018 E63S AMG, 2003 SLK 230 Sport, 2004 SL 600, 2006 SLK 55 AMG, 1998 E320 Wagon
Fuel rail/Injector question
Alright, so before I go stacking 168s or 175s on my car, I've got a question.
It's been recommended to me that even though I do plan on going 'safe' with my pulley stack, that I should either replace, upgrade or at least clean out my fuel rail and injectors. My baby's got 113K on her and she drives beautifully. The last thing I want to do is run static and have a boat anchor.
So...
I'm really not in the notion of wanting to upgrade my injectors/rail per se simply because that's just going to lead me on a never ending spiral of upgrades and costs I don't want to incur. The pulley stack w/cooling is going to be the last mod I put on this car simply because I want to keep her within the comfort power range. Besides, 500+ whp is hard enough to control, heh.
What recommendations do you guys have for my situation? Could I clean the current fuel system out to the best possible or is there maybe an OEM replacement or slightly improved set of parts I can get? Any help would be appreciated.
It's been recommended to me that even though I do plan on going 'safe' with my pulley stack, that I should either replace, upgrade or at least clean out my fuel rail and injectors. My baby's got 113K on her and she drives beautifully. The last thing I want to do is run static and have a boat anchor.
So...
I'm really not in the notion of wanting to upgrade my injectors/rail per se simply because that's just going to lead me on a never ending spiral of upgrades and costs I don't want to incur. The pulley stack w/cooling is going to be the last mod I put on this car simply because I want to keep her within the comfort power range. Besides, 500+ whp is hard enough to control, heh.
What recommendations do you guys have for my situation? Could I clean the current fuel system out to the best possible or is there maybe an OEM replacement or slightly improved set of parts I can get? Any help would be appreciated.
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From: Atlanta, GA
2005- E55, 2007 GL450, 94 B3000
Replacing the fuel pumps and filter would be a good start. You can remove your injectors and have them cleaned, rebuilt , and flow balanced. I am not sure if you have a reputable local company that can perform this, but injector dynamics in Tempe,AZ can. They are very good at what they do.
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From: Houston, TX
2006 E55, 2012 Jeep SRT, 2008 G37s 6MT (The Mrs.), 2005 Explorer
I'll sell you my 06 blue injectors cheap. They are a higher flow rate than the 05 and lower black injectors. I believe there is a 25% increase in flow. You could send them to injector dynamics and get them cleaned and prepped. You could also order SLR injectors. Mine are the same flow rate as the SLR injectors just that mine are 4 hole instead of 6 hole like the SLR injectors.
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From: The Granite State
.
^^^ THIS ^^^
It's not as "sexy" as throwing tuner parts at your car, but with 113K on the odometer, it is WAY overdue....
I've said before that my hypothesis about motor failures has to do with running out of fuel due to deferred maintenance of fuel filters... a clogged filter restricts flow, and with the increased demand for fuel from performance upgrades it's only a matter of time before disaster strikes.
As has been astutely pointed out, when these cars were new plenty of people pushed them to 500WHP without things like looped fuel rails or larger injectors.... but they had the advantage of perfect, clean fuel filters and new fuel pumps.
It seems weird to say that a 500WHP E55 is "commonplace" but certainly there have been plenty of folks who run that kind of power level now without looped rails and injectors.... seems to me those kind of mods really aren't necessary until you are somewhere north of 550+HP.
-G
It's not as "sexy" as throwing tuner parts at your car, but with 113K on the odometer, it is WAY overdue....
I've said before that my hypothesis about motor failures has to do with running out of fuel due to deferred maintenance of fuel filters... a clogged filter restricts flow, and with the increased demand for fuel from performance upgrades it's only a matter of time before disaster strikes.
As has been astutely pointed out, when these cars were new plenty of people pushed them to 500WHP without things like looped fuel rails or larger injectors.... but they had the advantage of perfect, clean fuel filters and new fuel pumps.
It seems weird to say that a 500WHP E55 is "commonplace" but certainly there have been plenty of folks who run that kind of power level now without looped rails and injectors.... seems to me those kind of mods really aren't necessary until you are somewhere north of 550+HP.
-G
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2006 E55
Isn't there documentation somewhere on the forum/Internet that says these motors suffer from fuel starvation in stock trim let alone making more boost/power?
I thought it was almost mandatory for the big CP/headers/TB guys to run the rail or at the very least, larger injectors to compensate for the air.
Am I wrong here?
I thought it was almost mandatory for the big CP/headers/TB guys to run the rail or at the very least, larger injectors to compensate for the air.
Am I wrong here?
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'06 E55
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From: Saudi Arabia - Qatif
Brabus K8 E55 05
Are these bigger injectors needed in your case? and the answer is:
Definitely Yes, Yes, Yes
you will even feel changes on the car after tune, specially if you are going 175 pulley with you current set up.
Definitely Yes, Yes, Yes
you will even feel changes on the car after tune, specially if you are going 175 pulley with you current set up.
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E55 amg
^^^ THIS ^^^
It's not as "sexy" as throwing tuner parts at your car, but with 113K on the odometer, it is WAY overdue....
I've said before that my hypothesis about motor failures has to do with running out of fuel due to deferred maintenance of fuel filters... a clogged filter restricts flow, and with the increased demand for fuel from performance upgrades it's only a matter of time before disaster strikes.
As has been astutely pointed out, when these cars were new plenty of people pushed them to 500WHP without things like looped fuel rails or larger injectors.... but they had the advantage of perfect, clean fuel filters and new fuel pumps.
It seems weird to say that a 500WHP E55 is "commonplace" but certainly there have been plenty of folks who run that kind of power level now without looped rails and injectors.... seems to me those kind of mods really aren't necessary until you are somewhere north of 550+HP.
-G
It's not as "sexy" as throwing tuner parts at your car, but with 113K on the odometer, it is WAY overdue....
I've said before that my hypothesis about motor failures has to do with running out of fuel due to deferred maintenance of fuel filters... a clogged filter restricts flow, and with the increased demand for fuel from performance upgrades it's only a matter of time before disaster strikes.
As has been astutely pointed out, when these cars were new plenty of people pushed them to 500WHP without things like looped fuel rails or larger injectors.... but they had the advantage of perfect, clean fuel filters and new fuel pumps.
It seems weird to say that a 500WHP E55 is "commonplace" but certainly there have been plenty of folks who run that kind of power level now without looped rails and injectors.... seems to me those kind of mods really aren't necessary until you are somewhere north of 550+HP.
-G
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From: The Granite State
.
I believe in this case we are talking about part #55 in the illustration (driver's side, sender with integrated filter).... someone smarter than me can chime in. My understanding is that the fuel PUMP is located on the passenger side.. (part # 40?)
-G
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E55 amg
so one would have to buy (2) of these ?
http://www.parts.com/parts/2005/Merc...nt=FUEL%20PUMP
http://www.parts.com/parts/2005/Merc...nt=FUEL%20PUMP
Super Member
Joined: Mar 2013
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From: America
04 E55 AMG
Because you're in there doing the work! and you already have to pull and disconnect the hoses from each, the pump and the filter. I would just replace both ... Regarding injectors you can get them on eBay for around tree fiddy to 400$ bucks, and the ev1-ev6 adapters for another fifty. good luck and don't forget to data log. Check out this link http://https://mbworld.org/forums/w211-amg/510180-do-not-overlook-your-fuel-filter.html
Last edited by MAN55LE; Feb 19, 2014 at 11:14 PM.
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From: Orange County
a land yacht.
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
I can't imagine you'd need new injectors with just headers/exhaust and pulley. We didn't see fuel start to suffer until over the 575 whp mark (dyno dynamics) on the stock fuel system in my '03 and iirc your '06 should have the blue top injectors which flow about 40 points more than my brown tops.
However, I would agree with the filter recommendations made above...
However, I would agree with the filter recommendations made above...
Last edited by chiromikey; Nov 14, 2013 at 04:21 PM.
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From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
It helps to keep the pressure constant within the rail. The theory I subscribe to is that in the standard rail with the fuel feed connection located at #8 injector, #8 will experience lower pressure first as the pressure builds from the two ends of the "U" back. Modifying the rail to be continous, as was done in the case of the SLR, helps to maintain a constant pressure. That said, low flow and pressure due to clogged filters and or worn pumps exposes any cylinder to catastrophic failure. Just my $.02.
Thread Starter
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From: California
2018 E63S AMG, 2003 SLK 230 Sport, 2004 SL 600, 2006 SLK 55 AMG, 1998 E320 Wagon
^^^ THIS ^^^
It's not as "sexy" as throwing tuner parts at your car, but with 113K on the odometer, it is WAY overdue....
I've said before that my hypothesis about motor failures has to do with running out of fuel due to deferred maintenance of fuel filters... a clogged filter restricts flow, and with the increased demand for fuel from performance upgrades it's only a matter of time before disaster strikes.
As has been astutely pointed out, when these cars were new plenty of people pushed them to 500WHP without things like looped fuel rails or larger injectors.... but they had the advantage of perfect, clean fuel filters and new fuel pumps.
It seems weird to say that a 500WHP E55 is "commonplace" but certainly there have been plenty of folks who run that kind of power level now without looped rails and injectors.... seems to me those kind of mods really aren't necessary until you are somewhere north of 550+HP.
-G
It's not as "sexy" as throwing tuner parts at your car, but with 113K on the odometer, it is WAY overdue....
I've said before that my hypothesis about motor failures has to do with running out of fuel due to deferred maintenance of fuel filters... a clogged filter restricts flow, and with the increased demand for fuel from performance upgrades it's only a matter of time before disaster strikes.
As has been astutely pointed out, when these cars were new plenty of people pushed them to 500WHP without things like looped fuel rails or larger injectors.... but they had the advantage of perfect, clean fuel filters and new fuel pumps.
It seems weird to say that a 500WHP E55 is "commonplace" but certainly there have been plenty of folks who run that kind of power level now without looped rails and injectors.... seems to me those kind of mods really aren't necessary until you are somewhere north of 550+HP.
-G
I've got no problem replacing the fuel filter if that's not the case. What's the proper word?
EDIT: Just saw the other statement. I'll be honest. I'm not terribly good at DIY stuff. I don't have much space in the garage for that stuff either, heh. I take it a dealership won't replace the filters?
Last edited by Koru_Kinshi; Nov 17, 2013 at 01:42 AM.
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From: Florida-Germany-New York
2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
Wait a second, I was told that the fuel filter on the E55 AMG isn't replaceable unless you replace the entire fuel tank.
I've got no problem replacing the fuel filter if that's not the case. What's the proper word?
EDIT: Just saw the other statement. I'll be honest. I'm not terribly good at DIY stuff. I don't have much space in the garage for that stuff either, heh. I take it a dealership won't replace the filters?
I've got no problem replacing the fuel filter if that's not the case. What's the proper word?
EDIT: Just saw the other statement. I'll be honest. I'm not terribly good at DIY stuff. I don't have much space in the garage for that stuff either, heh. I take it a dealership won't replace the filters?
Fuel pumps are integral and can only be replaced. They are accessible through the access opening on the right side of the tank.
There are many posts within this forum pertaining to these items.
