No Power From Turbo

[errno]

Hey guys,

Just bought a r33 not long ago, the past week Id noticed acceleration was a little jittery - not as smooth as it first was, and yesterday it seemed like all power that normally comes when the turbo boosts is missing.

The best way to describe the sound its making is as if the airbox is sucking alot of air (its quite loud, not as loud as it normally was). The boost guage built into the dash under the RPM tacho still moves when accelerating etc.

Any ideas what this could be? Everything is stock as far as im aware, stock turbo, stock boost the only thing that is changed is a k&n panel filter in the stock airbox.

[DARK_JET]

i had some issues with my r33 gts-t when i brought it....it was lagging power when on boost

took it to a trusty mechanic and he told me my catalyic converter was glogged up with shit....so he knocked it out

after that man good as gold...had a tune and some more boost.... and the result was 190.1kw @ 9psi and the wheels stock as a rock besides spitfire coilpacks

[errno]

Just took it for a spin then, seemed a little better than before - sounds like there might be a hole in the exhaust somewhere.

Hopefully it just needs a good tune up, any recommendations in Perth for that?

[str00th]

lol well you havent given alot to diagnose with but i would start by checking for an air leak. It may also be your turbo (broken fins?) or wastegate or solenoid (doubt it but meh).

[bish33]

wat mods? i would check ur cooler piping joins etc..

[errno]

is the turbo hard to get to to check for broken fins ?

[Bennett]

is the turbo hard to get to to check for broken fins ?

Depends how experienced you are with playing round in the engine bay. Take the cooler pipes and intake pipes off to check the intake side of the turbo and take the dump pipe off to check out the exhaust side of it. Chances are if your not sure how to get to it then it will take a while.

The best way to describe the sound its making is as if the airbox is sucking alot of air (its quite loud, not as loud as it normally was).

So air intake is louder or more quiet than normal?

[errno]

So air intake is louder or more quiet than normal?

Air intake is alot louder than before

edit: just re-read my OP, yeh that didnt make sense, i was meant to write it was alot louder not that it was not as loud, heh

Edited January 25, 2009 by errno

[errno]

Just took it to turbotech, its boosting at 8-9 PSI so its obviously not a problem with the turbo, maybe it just needs a good service and tune-up