Originally Posted by J08M3
without the 100 cpi akra cats? I doubt 20hp from those. Maybe a couple. I can see 20 over other HFC's or OEM cats. But maybe, would be interesting to see
N/A I agree, but with FI I think it's close to 20whp?
Maybe Green Hell and others with FI and catless can comment on gains they got?
Definitely the right thing to do with FI.
I expected it to be louder and am relieved it's not!!
I'm sure this thread will get a few DIYs done.