I have nocticed over the past few weeks that my GT4 doesnt seem to be boost as much. It doesnt seem as quick off the line as it use to be! Has anyone ever had something like this before? If any one can shed some light would be a great help? Is the turbo on the way out?

I put 18" tenzo r wheels on the car but im sure this isnt the cause of it.

Thanks

Alan

the turbo is almost NEVER to blame for boosting issues or the car feeling slower. normally its caused by a boost or vac leak. you can make a boost leak tester (google it) and find any leaks you might have.

but, adding heavy 18s on the car, might also make it slower.

This post has been edited by lagos: Aug 24, 2006 - 2:07 PM

I remeber when i got the 18's about 3 months ago it was still quick as hell. Then I started to notice it didnt seem as fast at taking off as before. I just thought i was getting use to the turbo boost but now im thinking something got to be wrong...

Have you done an error code check??????...some error codes will cause the car to reduce boost to help prevent damage to the engine.

hook up a boost gauge and see how much boost your making

I have boost gauge hooked up to it and i get about 1 bar pressure or so. Whats the seem like?

1 bar is slightly over the stock boost level

Hey, I was wondering if you could make this question anymore vague?

stock boost level should be at 0.9 bar.
have you checked the exhaust system for any leaks?