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Author Topic: missfire at 5k  (Read 3384 times)

Saint Steve

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Re: missfire at 5k
« Reply #15 on: April 20, 2010, 08:47:20 pm »
sounds like possible lean sneeze as you have cold intake, you need a high pressure fuel pump, and someone with vcds to do some data logs

Offline PDT

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Re: missfire at 5k
« Reply #16 on: April 20, 2010, 08:50:25 pm »
Not going for a HPFP? seems a waste not to with that spec!


Offline Guv

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Re: missfire at 5k
« Reply #17 on: April 20, 2010, 08:52:18 pm »
not atm funds are to low lol

i was told only needed HPFP with stage 2+

Saint Steve

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Re: missfire at 5k
« Reply #18 on: April 20, 2010, 08:57:19 pm »
With cold air intake, you will see potential poor fuel pressure under load.

I would say if you dont have funds, then install panel filter in factory airbox and remove cold air intake untill you can afford to fit, or you could cause more damage then harm leaving it as is.

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Re: missfire at 5k
« Reply #19 on: April 20, 2010, 09:01:27 pm »
nooo dont say that i dont have a standerd air box as ive just rebuilt the car i got it as a salvage car and the engine cover was smashed to bits lol

Offline Hedge

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Re: missfire at 5k
« Reply #20 on: April 20, 2010, 09:04:00 pm »
On the Ed30 Bluefin stage 2 only requests 110bar from the fuel pump so should be fine.

However get hold of someone with VCDS if you don't have it yourself and do some logs.

Offline PDT

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Re: missfire at 5k
« Reply #21 on: April 20, 2010, 09:06:05 pm »
HPFP can pick up +20hp and +25 ft/lb on a stage 1 tune and even make gains on stock. I have seen stage 1 tunes with turbo back exhausts and an intake cause fuel cuts and missfires.

as a test, put the original intake back on, see if the missfire goes away.

If you want a HPFP I have some Autotech internals, new in the box.

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Re: missfire at 5k
« Reply #22 on: April 20, 2010, 09:09:31 pm »
just going to try all the cheap things first LOL ill take these plugs back tomorrow and swap them over as i know the owner and see if that helps if not im gonna cry lol

Offline Poverty

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Re: missfire at 5k
« Reply #23 on: April 20, 2010, 10:58:53 pm »
is this with esp on by chance?

yes it is havent tryed it with it off but esp wont cause a missfire tho surely

basically you say it mainly happens in 1st gear, and your hear like a brrrppp noise, which could be esp kicking in and it does make the car sound likes its misfiring to some people. Basically just esp kicking in cutting the fuel or something like that.

So if it doesnt do it with the esp off I would argue that its not a misfire. Obviously if it does it in 4th or 5th gear its nothing to do with the esp.
« Last Edit: April 20, 2010, 11:00:35 pm by Poverty »