Ok, I have a dezod S1 kit with 550cc injectors running at 6.5psi off of Emanage Ultimate. Today, I took the tC for a ride, everything was just fine until I come around a corner. The car stalled out, but I was still in motion so I just put it into gear. Stopped the car, and it is running really rich, like 10.0 on my wideband AFR. I look under the hood, and there is a hissing sound from the back of the engine bay (vac leak?), and I have an exhaust leak coming out from the between the hotside and the downpipe. It is idling at 500 rpm, and will not hit boost. When I rev it up and release the gas pedal, I get no whoosh. It just sounds like someone huffing. Any ideas as to what all is going on here? where do I start to get this all taken car of?

 

You have a vacuum leak. Check all the vacuum lines and check all your couplers.

 

ok, should I worry about the exhaust as well?

 

If it's leaking by the turbo flange or the waste gate flange then that's maybe why its not building boost.

 

Leaks after the tail pipe are okay.

 

check your couplers and vac lines my money is on a coupler...

 

Lol I just said that.

 

wait a minute... lol

 

I haven't quite been able to fix that one myself. Its been present on every car I've ever driven, damn tail pipe exhaust leak, throwing off the environmental tune.

 

disconnected coupler, got it.

 

Told you so.
Your welcome.

 

Same thing happened to my Jeep Liberty 2.8L Turbo Diesel when cruising yesterday. Freaking charge hose (post intercooler) that goes into the TB popped a crack and just heard whooshing sounds. It has a stupid fast spooling turbo and would just spool, spit smoke, spool, spit smoke repeatedly at about 20 MPH max. I was only a mile from home. New hose came in today so it's all good but boost leaks are easy to fix if caught in time.