Yeah I burnt through my HF cats when I was NA in a few months.

Now I'm running 2.5" test pipes with a stillen exhaust.

But I have exhaust e-cutouts too.. when I run through my exhaust I think my turbos spool quite a bit faster.
But for me- that doesn't matter launching at 3000 RPMS.

 

Eric you dyno back to bakc wiht e-cutouts open and closed?

any big gains? I've heard the e-cut outs gains pretty well but loooses power when closed

- Eric

 

E-cutouts are also loud as hell when there open.....what happened to being a sleeper kind of car

 

OP test pipes gave me a 20+ whp gain and alot better sound but the smell sucks I dont notice so much in the car but on my clothing when I get home. Now for those e-cut outs before and after dyno numbers???? PLEASE.