cryjoeyy

i already did a muffler delete but i was wondering if it’d sound any good removing my secondary cats aswell

Jimmy_c63s

Nah man don't do it. Isn't it loud enough without mufflers?

cryjoeyy

it’s loud haha but was just curious but was worried about there being bad drone idk

mars c63s

I'm second the notion. Having both the secondary cats and mufflers out is gonna be too loud and uncomfortable for both you and neighbours.
I have the cats out and the ASR module to open the valves and it's plenty loud. Sometimes I set the valves back to stock mode, when I go on long drives or late at night. Its good to have some kind of control on the volume and not just extreme all the time.
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untamedd

subjective topic but my two cents is that youll enjoy that setup. im currently running AWE Track exhaust which is essentially a muffler delete along with a secondary cat delete and the car sounds and idles meaan.


good luck with the decision

///Bruce

Don’t

benzzyy

From what iv seen on this forum alota the people here think its not good to remove the mufflers on this car. theyve provided no mechanical or performance problem it creates, they just seem to not like the idea of it. however on most cars this does give you a louder sound thats more natural to the engine its behind. so im wondering, how does your car sound now with the stock cats an no mufflers? do you like it? is there alota drone or popping?

no mufflers + a cat mod may be too much for this car. iv never done it myself so i dont know for sure, but from what people on here say the removal of cats makes it significantly louder.

tbirdvet

Removing these parts my impact the engine calibration The engine module has parameters like O2 monitoring that can be changed when you remove exh. components and/or change the back pressure characteristics. New cars are not the same as the cars in the 1960'si

ahad5058

Put you muffler back on and go catless. Its amazing.

MaxVO2

*****I did secondary cat delete with the AMG performance exhaust and it is plenty loud on my 2018. Car sounds great, and I can mute it if needed for longer trips, or if I have a sensitive girl in the car that wants to talk, etc.. It was noticeably louder after the removal. No way I would go cat less and muffler delete - just way too loud and I don't want to disturb the neighbors or attract cops. The performance difference is negligible, but the sound is a LOT louder and it gets old. Especially true if this is a daily driver versus weekend car.

JRHolt

NO!