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Author Topic: boost problem.....again  (Read 18198 times)

Offline joesgti

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boost problem.....again
« on: March 05, 2009, 09:54:46 am »
my car doesnt seem to boost past 10psi in 1st or 2nd gear then in 3rd 4th 5th 6th it boosts to 20psi but only when its past 3000 revs!!??

it was in for diagnostics yesterday and no boost leaks were found, and the car seems to be healthy.

ive just been on the phone to the tuning company who mapped my car and they have told me to disconect the battery for 30 mins??? doubt this will do anything but has anybody else hurd or anything like this or can anybody suggest anything?

(also found that my front ARB had snapped off  :surprised:)
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Offline JPC

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Re: boost problem.....again
« Reply #1 on: March 05, 2009, 09:56:19 am »
is that not an intentional thing in the map?

who mapped it? does it normally boost past 20 in 1st n 2nd?
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Offline joesgti

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Re: boost problem.....again
« Reply #2 on: March 05, 2009, 10:00:40 am »
yups, it normally does. celtictuning.com are the mapping company.
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Offline tony_danza

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Re: boost problem.....again
« Reply #3 on: March 05, 2009, 10:12:02 am »
Pulling the battery can reset some of the ECU "learned" settings. It'l take a few days to adapt again, but see if it makes it any better.

Get the car warm then do it, so you can take it out and kick the sh*t out of it - that way it knows what it should be doing.
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Offline joesgti

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Re: boost problem.....again
« Reply #4 on: March 05, 2009, 10:15:21 am »
right so, go for a drive to get the engine warm, get home, disconect battery for 30-45 mins, re-attatch then go for a very very spirited drive?
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Offline tony_danza

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Re: boost problem.....again
« Reply #5 on: March 05, 2009, 10:32:21 am »
Pretty much yeah.

My mate used to do it with his R32 after weekday commuting had made it go to sleep, it was an animal once reset and thrashed for a few minutes.
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Offline joesgti

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Re: boost problem.....again
« Reply #6 on: March 05, 2009, 10:35:33 am »
Quote from: tony_danza on March 05, 2009, 10:32:21 am
Pretty much yeah.

My mate used to do it with his R32 after weekday commuting had made it go to sleep, it was an animal once reset and thrashed for a few minutes.

really!! sounds promising as it only really started once i got back from my 3 week boat trip. and it was fine the day before i left when i was running at the pod. this actually sounds promising.  :smiley:
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Offline tony_danza

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Re: boost problem.....again
« Reply #7 on: March 05, 2009, 10:48:11 am »
Can't hurt.

Back in the day, when AmD wasn't anything to do with BBT they offered this all singing, all dancing stage 2 kit for the MKIV R32 remap/induction/Milltek & Sportcats/etc cost a bloody fortune.

Anyway, one of the Golf mags held a 1/4 mile shoot out and he rocked up in his R32 and lined up with all these other modded N/A cars they'd sourced. Stage 2s, cams and all other manner of things... but no chargers/turbos. He pulled the battery, shoved a few bottles of octane booster in, would the timing forward with VAGCOM and took it for a spin up and down the straight.... and absolutely monstered every car there.

£20 and a 15 minutes work battered thousands of pounds worth of mods, there were some very annoyed customers complaining as you can imagine.
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Offline joesgti

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Re: boost problem.....again
« Reply #8 on: March 05, 2009, 11:17:09 am »
soulds like fun, you think if we all disconted our batterys and went for a drive all our cars would be quicker  :signLOL:
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Offline tony_danza

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Re: boost problem.....again
« Reply #9 on: March 05, 2009, 12:01:14 pm »
I don't know if I can bothered resetting the clock!.. but it's a good place to start if its feeling sluggish and there's no codes, then the MAF next.

That is a funny story, but I don't think it applies to every car??

That animal was just a wrong-un from day 1, it left Germany with a bad attitude and got hammered every day of its life. The only running in it got was the 5 minutes on tickover in the VW compound! Everyone says there's Friday cars and 1:xxx special ones, that was deffo a special. So, never race a 3 door black R32 just in case!!
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Offline joesgti

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Re: boost problem.....again
« Reply #10 on: March 05, 2009, 12:14:53 pm »
how do i check the MAF
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Offline tony_danza

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Re: boost problem.....again
« Reply #11 on: March 05, 2009, 12:19:14 pm »
You'd notice it running rough, so disconnect it and if it gets better, then you know the MAF is goosed. You can do some flow logging with VAGCOM to test it.
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Offline joesgti

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Re: boost problem.....again
« Reply #12 on: March 05, 2009, 12:30:26 pm »
wheres the MAF at?
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Offline tony_danza

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Re: boost problem.....again
« Reply #13 on: March 05, 2009, 12:33:43 pm »
It'll be on the intake, small electrical plug going into a housing - someone will find a pic I'm sure? I haven't got one to hand and I've a cement mixer on the go! (brew break)
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Offline joesgti

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Re: boost problem.....again
« Reply #14 on: March 05, 2009, 12:34:54 pm »
aha, you mean on the engine cover? so i just unplug this and see if it solves the problem?
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