Upgraded injectors and/or fuel rail needed with 168, headers, TB and intake system?
Thread Starter
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Joined: Aug 2011
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'05 E55, '12 C63
Upgraded injectors and/or fuel rail needed with 168, headers, TB and intake system?
With the above mods, are upgraded injectors and/or fuel rail necessary?
I am thinking to buy HadiLaw's intake system.
I thought the fuel rail and injectors become necessary with too much boost (180+ pullies), but with a small pulley like a 168, it is unnecessary.
thoughts? feedback please.
Thank you
I am thinking to buy HadiLaw's intake system.
I thought the fuel rail and injectors become necessary with too much boost (180+ pullies), but with a small pulley like a 168, it is unnecessary.
thoughts? feedback please.
Thank you
MBWorld Fanatic!
Joined: Jan 2005
Posts: 4,276
Likes: 28
From: Bay Area
2015 E63S, 2018 E63S
With the above mods, are upgraded injectors and/or fuel rail necessary?
I am thinking to buy HadiLaw's intake system.
I thought the fuel rail and injectors become necessary with too much boost (180+ pullies), but with a small pulley like a 168, it is unnecessary.
thoughts? feedback please.
Thank you
I am thinking to buy HadiLaw's intake system.
I thought the fuel rail and injectors become necessary with too much boost (180+ pullies), but with a small pulley like a 168, it is unnecessary.
thoughts? feedback please.
Thank you
MBWorld Fanatic!
Joined: Sep 2008
Posts: 3,152
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From: murfreesboro,tn
2003 porsche 996 turbo
the fuel rail itself will help ensure all the cylinders get the same amount of fuel. the injectors ensure more fuel is getting there. im running a prototype rail on my s/c v6 and it dropped from a 11.8 afr to low 10 high 9 afr with the rail alone no injectors. that tells me the new rail flows a great deal of fuel
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Joined: Jun 2008
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From: Texas
2003 CL55
We usually dont look to fuel upgrades under 500 RWHP. Rough guess , you would be at 470-480 RWHP depending on what headers you run. I assume you will have a TUNE done with your list too?
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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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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
Thread Starter
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Joined: Aug 2011
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'05 E55, '12 C63
Yes, Kleemann headers with primaries deleted and their K2 tune.
That along with their 168 pulley would put the car at 470-480rwhp?
MBWorld Fanatic!
Joined: Mar 2010
Posts: 1,909
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From: San Diego
F-250
I don't disagree with anyone here, but: Even at your level, your injectors will be running at a high duty cycle. Will they go static? I don't know, but I think the fuel rail is a great add, even early in the modding process.
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MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
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From: Puerto Rico
2005 E55 AMG
On my car, with 500whp, I ran static from 5,500rpm up to redline. If I were to do it again, I would have gotten injectors even as a first mod because I can only imagine that after 450whp or so the oem injectors must already be dangerously close to static.
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Joined: Feb 2010
Posts: 1,380
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From: Toronto
CLS63 PP
FWIW I did injectors before I even did the boost increases. I Did
1. Cooling
2. Headers
3. Tune/Injectors
4. Pulley
5.Exhaust
6. TB and Airboxes
7. Dyno Tune
Have 2 years and several track days on it with nary a hickup.
1. Cooling
2. Headers
3. Tune/Injectors
4. Pulley
5.Exhaust
6. TB and Airboxes
7. Dyno Tune
Have 2 years and several track days on it with nary a hickup.
MBWorld Fanatic!
Joined: Mar 2010
Posts: 1,909
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From: San Diego
F-250
Get the TTM fuel rail. It is plug and play and many of the tuners have this dialed in. The rail is only half the equation. The TTM injectors are configured for a custom spray pattern that comes as close to direct injection as possible. Bruce put a lot of time into developing the kit and it works flawlessly
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From: Maryland
a Rivera...via a Custom 24, Strat and Les Paul
for what it's worth:
with Kleemann headers, 168 pulley and two tunes dynoed on the same day, on the same dyno:
K2 =455hp/484tq
OE = 484hp/502tq
with Kleemann headers, 168 pulley and two tunes dynoed on the same day, on the same dyno:
K2 =455hp/484tq
OE = 484hp/502tq
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05 E55 AMG, E320 CDI, Turbo E46 M3,IS300 2JZGTE,VQ35 Turbo Maxima, Mercedes 300D
I agree with this .. though I did not do exhaust only because I want to keep things quiet. Everyone is right on here. Don't take chances on fueling, it's just not worth it.
Thread Starter
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'05 E55, '12 C63
Oh wow, I thought with the 168 and their headers, you would gain 100rwhp/100rwtq at the minimum, no?
What did you dyno stock? My car did 405/457 stock and I was hoping the hp would be close if not 500rwhp and the torque would be 600rwtq or close to that...am I wrong here?
