When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
cats do effect the sound....if your worried about passing inspections...you car just drill the cats...that way they are on the car but do not function and from what i hear is the same sounds as if you had none....
In my voyage in purchasing long tubes, I just was wondering if cats or no cats will effect the sound of the exhaust.
I don't have cats. when i bought the FRC it had a Jeggs larger dia.type muffler- resonator. coming off TPIS headers straight back to Borla mufflers with 4'' quad round chrome tips. With my strong H/C pkg. stage 4 setup from CARTEK, it makes s terrific sound.
I did put random cats on to pass Md. inspection and it sounded like ****. plus when u decellerated u would sometimes backfire which really is upsetting. Now i am back to NO cats.Also the last 2 emmissions test,, they gave me a waiver, no questions asked because i told them i could not go over there ramps cause my vette sits so low it would do a lot of damage.. This is in Md. Just telling u what i have esperienced. Good Luck!!