Help! Installed Turbo And Fmic Now Runs Like A Dog

[stomper]

Desperately need help. Just installed a GT3071 turbo and Greddy M Type FMIC to my R33 GTST.

Started her up and now she sounds like a tractor; like the exhaust isn't on at all - which it is and has been checked.

As i had to make up some interesting piping combos to fit the compressor infeed and outlet pipes, i have yet to be able to plumb in the return feed from the stock BOV. Would this make the noise i am hearing?

Profec b is installed, but the electrics require wiring in - not sure if this would cause the noise?

Best i can do at the moment is double check all the hose clamps, however it just seems odd considering it is all pre engine airflow.

[BHDave]

when you say it sounds like a tractor do you mean it idles smooth but has an exhaust leak, or do you means it is just running rough as guts at idle?

The bov not plumbed in could cause the latter. If you start it and cover the bov outlet with your hand it should improve if thats allowing a leak.

It's pre engine air flow but it is still metered by the afm so a leak anywhere will cause issues

Edited May 5, 2008 by BHDave

[stomper]

Sounds like an exhaust leak, as if thre was no silencer - however exhaust is all on and no leaks. My thoughts were that perhaps the turbo is sucking air through th ecurrently open Plumb back hole on teh stock AFM to turbo piping. Will pipe this back and see how it goes.

Thanks for teh pointer