Originally Posted by dangerousatom
I dont see the exhaust being the choking point, particularly if its way back at the muffler can. On e85 you should be far more HP then me if we were on the same dyno?!? I was on a Dynapack near sea level at 85+ degrees
I have a similar setup with the older non HTA Green 850cc FMIC and at 20psi im at 391hp on 93oct.
Only thing I can think of is to check the gaskets on the TGV to spacers. I have seen them stick near an 1/8" into the air flow path, just because they are too wide. Also check the transitions from Manifold to TGV to Spacer to Heads....the smoother the transition the better.
Next time your on the Dyno take a laser temp sensor and shoot the TMIC and see what the core is at during the pulls. If its ridiculously hot that will not help either.
Thanks for the input, I'll look at the gaskets next time I tear it apart. The intercooler was cool to the touch, I checked it after every pull, had 3 large automotive fans blowing on the engine compartment. The tuner expected to see 375whp on 92, and 435whp on E85. I made 345whp @ 19 psi on 92, and 382whp on E85. It is a mustang dyno, so expected slighty lower numbers. When I only got 382 on E85, I was really wondering whats wrong. He said he felt like we hit some sort of threashold, it really didn't make any more power from 22psi to 24psi on E85. He questioned my spearco, but I know that intercooler can handle it. I can see the pressure increase on the map sensor to 24psi, just seemed like the car couldn't move the air out or something. I had a buddy put down 410whp on EQ Tunings dynapack using a maddad whisper, not sure how accurate those dynos are. He says its calibrated to read like a mustang though.