Have you done a compression/leakdown test to rule out something else? Built or non-built block? It would seem strange to me that a turbo would just 'lose efficiency' without showing other obvious signs of wear (oil leaks, ect).

 

why? The turbo's on the jwt kit are what sets it apart from every other tt kit and every other kit that even uses garrett turbos.

 

The JWT kit uses Garrett turbos...

Regardless, stop the thread jacking people.

 

Just my personal preference...The APS Extreme Garrett BB turbos are nothing to spit at BTW.

But enough of this...do not want to OT this thread to oblivion. Sorry OP

 

NOT! Saying one Garrett turbo is better than another? And a smaller one at that with a compressor chart that goes nowhere after 2.4 bar? Puhhhleeeze. Because JWT has voodoo? LOL.

Anyway, urban's post answered the question. /thread.

 

No I have not done a compression test but I do see a good amount of smoke coming out of mostly the passanger side exhaust pipe.. Hmmm