M4 secondary cat delete light revs Valve open/closed

Secondary cat delete cold start light revs with valve opened and closed.

[@iamcute69]

AFAIK, the "second cat" is a resonator that's meant to tune the sound. The 1st cat is the one to remove to make it sound better.

[@sameelanka]

Have you done any other mods in this video, other than the cat delete?

[@mahsumatiz3195]

Bro is that with costum x pipe ?

[@matthewa123456]

You in upstate ny?

[@Anthony-dk7de]

Sounds crappy 🤷‍♂️. My co worker has an M3 Comp and it sounds crappy too stock. They sound like Ebay Civics 🤣

[@GAMESKILLZ]

Anthony D. bruh u talking ab a upwards 130 k coupe i mean maybe its just cause i own one but like not every fucking tweak is gonna be able to pick this up and drive it without killing themselves

[@crmnl_la]

They do sound like ass tho. It sounds good with an equal length exhaust tho, Valvetronic was able to make one that sounded really smooth

[@mindaman1]

Don’t be mad you drives civic still

[@multiblade04]

@@mindaman1 but it sounds like ass?

[@vladkuz1298]

Wtf is secondary cat ?

[@soukdoss]

There’s additional cats on the mid pipe

[@aahmed4321]

ITS THE SECOND CAT YOU DIDNT ALOOW INTO YOUR HOME

[@leegeisler1828]

Sounds horrible

[@mindaman1]

Don’t be mad you drive a civic still

[@multiblade04]

@@mindaman1 he’s right. Sounds like a fart can. Bmw ain’t the car to get if you’re after exhaust sounds.