Onyx Z

iTrader: (3)

What size cutout should I get with the mods posted in sig? I have been told 3 inch is good and four inch would hurt me. I have also been told that four inch is just the right size.

Thanks
Ryan

Jabroni

Unless you plan on doing some serious pipe replacements, 3" is the stock pipe size. That's the size you want and I wouldn't go larger. Bigger is not always the best way to go. Don't believe the hype. FWIW, I gained 17 RWHP opening mine up versus closed. A good mod for cheap power gains.

Fahad

Take the size same your exhaust pip, the Cutout's sizes is 2"/2.5"/3"/3.5" & many, and the size for stock pip is 2".

Good luck

WILWAXU

iTrader: (6)

You should use a 3" cutout, even with the stock catback.

4" isn't necessary on most of our cars.