Author Topic: Crazy boostings when changing gear  (Read 872 times)

Offline Dave_IOW

  • Forum addict
  • *
  • Posts: 4,677
Crazy boostings when changing gear
« on: 17 March 2012, 00:21 »
Sometimes when changing gear quickly from first to second after really giving it some (front wheels still spinning) when i engage second and floor it again, the car feels very hesitant, like the wastegate is still open or something and will just pop, bang & have no power.

It has no power although the boost gauge can read anything up to about 30psi as if the turbo is spooling, but the pressure is going somewhere else   :grin:

This is not the easiest thing to explain, but that's the best i can do. No fault codes, and when i leave throttle for a second and put foot back down it will boost back up and carry on normally, leading me to believe there are no leaks or anything anywhere.

It seems as if it only does this when i change gear and the front wheels are actually spinning while changing  :huh:

My initial thoughts are the wastegate, N75, or 007p not operating fast enough? but how the hell do i check these?
Project: Mk2 20vT trackslag
Daily: Mk2 GTI typ19

Offline Wazzzer

  • Moderator
  • 10k hero
  • *****
  • Posts: 11,172
  • Golf GTI 1.8T AGU
Re: Crazy boostings when changing gear
« Reply #1 on: 17 March 2012, 12:51 »
grease the DV up although I wouldn't say that would cause overboosting...

I have a spare N75 if you need one to try (again)  :wink:


1999 1.8T: R-Tech remap - 225bhp/256lb/ft : K03s : THS FMIC : THS PCR pipe : 2.5" stainless exhaust : THS FR3 Engine mounts : G60/VR6 clutch : Calibra Yellow injectors : VR6 MAF : Devils Own WMI : Forge 007p : Carbonio CAI : Leon Cupra R Brembos : FK AK Street coilovers : Votex skirts : Anniversary front : click ---> http://www.golfgtiforum.co.uk/index.php?topic=92175

Offline Dave_IOW

  • Forum addict
  • *
  • Posts: 4,677
Re: Crazy boostings when changing gear
« Reply #2 on: 17 March 2012, 16:41 »
No nor me, really have no idea, only does it when changing gear with wheels still spinning  :huh:

Think i might need to pal if that's ok?
Project: Mk2 20vT trackslag
Daily: Mk2 GTI typ19

Offline Wazzzer

  • Moderator
  • 10k hero
  • *****
  • Posts: 11,172
  • Golf GTI 1.8T AGU
Re: Crazy boostings when changing gear
« Reply #3 on: 17 March 2012, 17:35 »
yep no worries, it's in the car  :wink:


1999 1.8T: R-Tech remap - 225bhp/256lb/ft : K03s : THS FMIC : THS PCR pipe : 2.5" stainless exhaust : THS FR3 Engine mounts : G60/VR6 clutch : Calibra Yellow injectors : VR6 MAF : Devils Own WMI : Forge 007p : Carbonio CAI : Leon Cupra R Brembos : FK AK Street coilovers : Votex skirts : Anniversary front : click ---> http://www.golfgtiforum.co.uk/index.php?topic=92175

Offline Dave_IOW

  • Forum addict
  • *
  • Posts: 4,677
Re: Crazy boostings when changing gear
« Reply #4 on: 17 March 2012, 17:59 »
You haven't got a cheapy headunit for sale? Mines dead  :grin:
Project: Mk2 20vT trackslag
Daily: Mk2 GTI typ19