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Smokin19 · 05-14-2022, 07:08 AM

This is why I kept the NPP with the original muffler and it sounds great on my car. I have 2" headers w/cats into 3" exhaust. Barks when I get on it, crackles at idle with the cam, cruises freeway like stock. I did pull the fuse on the NPP.

05-14-2022, 07:08 AM	#4
Smokin19 Drives: 19' ZL1 A10, w/pdr Join Date: Sep 2014 Location: S.W. ohio Posts: 1,722	This is why I kept the NPP with the original muffler and it sounds great on my car. I have 2" headers w/cats into 3" exhaust. Barks when I get on it, crackles at idle with the cam, cruises freeway like stock. I did pull the fuse on the NPP. __________________ BTR Stg II cam w/ 38% fuel lobe, ARH 2" headers into 3" w/Gesi cats, Kong X port, Weapon X triple ht exchangers, NW 103, Rotofab big gulp, DSX lowside, TCM tune, BMR Lockout, Mustang dyno 720 rwhp, 634 rwtq on 93 pump.