9157

I have an opportunity to purchase an '07 ZO6 Bi Mode axle back...I don't want loud...other than sound, is their any benefit or improved performance? I have '08 with Halltech Super bee CAI and Kooks 1 7/8" into 3" catted x pipe and a good Tune into stock non NPP cans..RWHP 397..will Corsa/B&B/Borla/NPP/ ZO6 Bi Mode really improve that?

haljensen

GM advertizes the NPP as worth 6 HP on the C6.

Go2GuyTX

I personally have the Borla ATAK axle back and I don't know if it "really" helped but it feels like it has more SOTP acceleration...

GM does claim the 6hp change on a c6, but it doesn't open till 3k-3500rpm which is where peak numbers really make a difference anyway.