quiet down headers with corsa exhaust

[milo8604]

I have 2010 SS with 1 7/8 long tube headers/no cats custom grind cam and corsa sport cat-back 486rwhp. It is obnoxiously loud looking for a cost efficient way to quiet it down. Wanting more of a sleeper. Thing of adding a magnaflow dual 2.5 in/out resonator 12468 or 11386 in mid section in front of corsa mufflers. Has anyone done this?

[milo8604]

Thats an option but I think it may be still be loud. My stock mufflers had a strange rattle to them also.

[mariojmoe]

????? Too loud you say? Hell mine has a big cam, longtubes, no cats (catted x pipe) and full 3 inch stainless works chambered exhaust (no mufflers) and sounds amazing! Yes its loud but I cant go anywhere without getting a thumbs up or several compliments.

I had the npp on mine from the factory and it was wayyy too quiete . Idk what to suggest bc most people want louder I thought

[Indydriver]

Start with high flow cats. Always work from engine back.

I was very concerned with getting my car too loud, especially since it's a convertible. LTs+HFCs into OE catback with NPP is just right for my tastes. Mellow muscle car below 3000, pretty rowdy above.

[RockerBox]

Put some high flow cats on it.

[milo8604]

I still have the factory exhaust at home. I might try it out see if it helps. Some ppl like the straight headers sound I do not. It very loud with corsa and no cats especially at wot it sounds like a dragster. Tech at Lethal Racing told me that the corsa with headers and no cats 1 of the loudest setups.

[rebelyell22]

borla touring

[elarson5757]

No such thing as too loud... Just sayin

[MrChrisLS3]

I had a '96 Vette that I had the rear mufflers eliminated and put in the Magnaflow dual in/out in place of the stock resonator. With the cats in place it was perfect, without cats a little too loud.

I suggest a combination of High flow cats and the resonator. This should give you a nice aggressive rumble. The big thing about that dual in/out is that it really does a great job of tuning the exhaust sound.

[JDP Sales]

The Magnaflow Resonated X Part # 11386 is a very popular option for quieting down the exhaust and removing rasp.

Best regards,

Tyler
888-308-6007

[Gee]

Dont waste the nice exhaust you have. Add resonators and high flow cats. Should mellow it down a little bit.

[Snidely Whiplash]

I loved the old turbo Corvair mufflers until the tractor muffler was discovered to be ultra quiet/

[Rocky1974]

Originally Posted by milo8604

I have 2010 SS with 1 7/8 long tube headers/no cats custom grind cam and corsa sport cat-back. It is obnoxiously loud looking for a cost efficient way to quiet it down. Wanting more of a sleeper. Thing of adding a magnaflow dual 2.5 in/out resonator 12468 or 11386 in mid section in front of corsa mufflers. Has anyone done this?

I have Kooks 1 7/8 long tubes with their high flow cats, hooked to a stock cat-back. My car sounds stock at idle and part-throttle, but it's significantly louder at full-throttle.

Originally Posted by milo8604

That's an option but I think it may be still be loud. My stock mufflers had a strange rattle to them also.

That rattle is actually very common on the early cars. There's a TSB on it. I think it had something to do with the vendor not welding the baffles inside the muffler properly.

[Avenging Orange]

Cam, long tubes, no cats? Stealth?
As most have said....at least try cats first and go from there.