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need help 04 g35 missfire

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Old Nov 3, 2008 | 08:19 PM
  #1  
kooguys racing's Avatar
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need help 04 g35 missfire

have a 04 g35 i bought it about 2 months ago car ran real good has 48k on it so i decided to turbo it with the greddy twin kit and it runs good but has a missfire the person i had put on the kit said it was normal but ask cause thats not something i can belive y would greddy send you every thing for it to miss fire went today to buy the plugs that are 1 step colder they will be here tomorrow (ngk lazerplugs) like 9.99 each hopefully it helps the proublem any help would be greatly app. its the full greddy kit with intercooler and the blue engine mang. thats pre tuned thanks
 
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Old Nov 4, 2008 | 01:00 AM
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ok thanks for the help no one told me that i need the plugs so pretty much doing it my self now i plan on getting the utec just didnt know i needed it right now so ill be ordering very soon any other things you can think of that i need to buy for my g please let me know if you dont mind
 
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Old Nov 4, 2008 | 06:13 PM
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Originally Posted by HomieG35
Larger injectors, some 380's atleast 440's better. Walbro 255 fuel pump.
The Greddy kit comes with 440's.
 
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Old Nov 4, 2008 | 06:33 PM
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yes kit came with 440 and there in so is the walbro fp going out right now to put the spark plugs in
 
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Old Nov 4, 2008 | 09:30 PM
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spark plugs are in and still has ruff idle any one else had the same proublem
 
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Old Nov 4, 2008 | 10:22 PM
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i think just at idle and it surges at low throttle
 
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Old Nov 6, 2008 | 10:55 PM
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well drop off at the shop but no answer so if yall have any answers for me please let me know thanks
 
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Old Nov 7, 2008 | 09:11 AM
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From: minnesota
Do some searching for "Twin Turbos". There is some valuable info on boosting the G and doing in right, the first time. IMO, engine management and tuning are prolly the best spent money depending on your goals.

As for your current problem... If your still running the E-Manage, that is prolly where the issue is. I think it takes some pretty talented tuners to get that system right. The Utec will have the same issue, but is a little more friendly to tune. Try contacting some of the more reputable shops listed on the forum. They are usually will to help. Good luck.
 

Last edited by Iceman8; Nov 7, 2008 at 09:16 AM.
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Old Nov 7, 2008 | 09:12 AM
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From: Pothole Central and still ridin slammed...Boston
Fuel pump, 1 step colder spark plugs, ditch the blue box and most importantly get a tune.
 
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Old Nov 7, 2008 | 10:29 AM
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who is doing all the work?
 
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Old Nov 7, 2008 | 10:34 PM
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got it back today said its fine just needs to be tuned it which he will do tuesday and the fuel pump and 1 step colder spark plugs are in also will be buying the utec and some 750cc injectors in two weeks so hopefully my car doesn't blow by then thanks for the help all info is really use full
 
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