What AFR are you guys running at full throttle? Mine is usually around 11.5-12.5

 

must tune...

 

Mine went lean a point also. I have a before and after dyno, I picked up 15-10 whp midrange with the test pipe.

You want to be about 12:1 full throttle to be safe at stock boost levels. 12.5:1 if you want a bit more power. From my experience CTSC comes lean out of the box no matter what Comptech says.

 

i was running 11.5psi on my Comptech SC and when i installed a test pipe, it jumped up to 13psi

i am quite sure that even with a stock set up, you will run lean when installing a test pipe..

 

I run 11.0-11.5 at WOT, 10.0 at vtec (5200 rpm). Test pipe is nice for sound, minimal power gain in my opinion at that, but yes RICHEN it up!!

 

Put on test pipe and screw in the FPR nut a little before driving to the dyno. I've heard of at least one person who toasted their engine on the way to dyno it.

 

I was told that if the car is dyno's with the cat, that more than likely the cat will fry and cost you some serious hp. I waited to tune until I got the tp installed

Mitch

 

mine went up a bit after TP install aswell.I have a VT with T1R TP.

 

So if you have a 13.0 AFR would you screw the nut in or out on the FPR?

 

In, clockwise. The adjustment screw is for fine tuning only. It may not be enough to get your a/f safe. If you fiddle with the screw to much, you could through off the internal adjustment preset from Comptech and break the fpr.