VanCityLS4

iTrader: (1)

For a short time I rolled around with a modded mid pipe (no secondarys) and a pair of Tom’s Racing filters. While the exhaust wasnt much louder than stock, the 1UR definitely pulled harder to redline. Id say easy 10WHP there.

Phantom410

Did you delete the prefilters by chance in the filter boxes?

VanCityLS4

iTrader: (1)

The highly debatable charcoal filters?

I feel like I should have ripped them out years ago... since there’s no proven gains maybe just sound (I’m already running the ‘13+ sound generator) it really hasn’t bothered me. I recall a couple other members that have removed them.

Phantom410

Ha, running same setup as me. Installed the '13 F sport sound gen as well. deleted the charcoal filters, they looked filthy when I chopped em out. Doesn't hurt anything, get plenty of sound from My magnaflow Mufflers and the Sound gen.

ThomBradie

yessssss :3