Boost leak on the turbo

LafitteZ · 10-01-2012, 02:56 PM

Quote:

Originally Posted by Motion Lab

I would suspect a leak at the turbo flange, or exhaust manifold itself, as opposed to a coupler if it feels like boost is coming on slower. A pre-turbo exhaust leak will really make the car feel lazy. Generally if it is that bad it would probably be audible, but if you don't know what your listening for it might be difficult to notice. Do you know what turbo kit the car currently has?

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

Its a custom kit built by a place in florida. Not really sure about everything iv only had it for about two weeks so im just trying to go thru things and get it checked out. Gtm was the last shop to see it two years ago so they really dont have much info on it. All I know is on the exaust side of the turbos it has 004 hks on it. The pipeing is ran pretty much the same way my gtm kit is ran on my 370 with some slight variation. the car seems to instantly jump a couple psi but is very slow to build to 10 psi after that. I was just telling someone the other day that the turbo seems to be a bit louder when in boost then my 370z. My dyno graph really looks more like a supercharger graph then a turbo graph.

Motion Lab · 10-01-2012, 03:07 PM

Quote:

Originally Posted by LafitteZ

Its a custom kit built by a place in florida. Not really sure about everything iv only had it for about two weeks so im just trying to go thru things and get it checked out. Gtm was the last shop to see it two years ago so they really dont have much info on it. All I know is on the exaust side of the turbos it has 004 hks on it. The pipeing is ran pretty much the same way my gtm kit is ran on my 370 with some slight variation. the car seems to instantly jump a couple psi but is very slow to build to 10 psi after that. I was just telling someone the other day that the turbo seems to be a bit louder when in boost then my 370z. My dyno graph really looks more like a supercharger graph then a turbo graph.

Do you have an AFR gauge in the car? Car would be running very rich with a boost leak. Is 10PSI your target boost?

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

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