Custom Dual Exhaust

2ndAmendment · March 11, 2020

I'm looking at getting some dual exhaust bent up for the truck. Would you go 2.5" or 3" piping behind the muffler. Probably end up with a Flowmaster 10 series muffler 3" inlet and outlet into a y-pipe for the duals.

EIKON · March 11, 2020

I’m on my mobile and can’t see your signature. I’m assuming this is for a 6.6 gas truck.

I would do the 3”

Also, I would suggest using a muffler that isn’t a chambered design.

Magnaflow and MBRP would bee good choices.

Chambered mufflers aren’t going to flow as well and often times cause drone on these engines.

newdude · March 11, 2020

Hard pass on the Blowmaster muffler.

Get a good one. The larger the body, the less chance of drone too. Borla, Magnalfow, MBRP, Carven.

Not sure if Corsa sells just a muffler, but one of their Silverado ones would be the ultimate best option if it were possible. I've had 2 of their catbacks, ZERO drone and a hell of a sound.

Edited March 11, 2020 by newdude

2ndAmendment · March 12, 2020

I had the Super 44 on my last 6.0 and it sounded good and didn't drone IMO but wasn't quite loud enough, hence why I'm leaning towards the 10 series.

mkeddie · March 12, 2020

Borla is coming out with a cat back exhaust that is 3.5 diameter

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bruklnboy · March 17, 2020

On 3/12/2020 at 4:24 PM, mkeddie said:

Borla is coming out with a cat back exhaust that is 3.5 diameter

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Do you have any idea when?

mkeddie · March 18, 2020

Do you have any idea when?

https://r.tapatalk.com/shareLink/topic?url=https://www.gm-trucks.com/forums/topic/234088-exhaust-ideas/&share_tid=234088&share_fid=33003&share_type=t&link_source=app

Exhaust ideas...

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2ndAmendment · March 27, 2020

Had the Flowmaster 10 series welded on with dual 3" coming out at 45's. Good and deep at idle and you can make er bark under throttle.

Steve.S · November 24, 2020

I just sold my 2017 Denali 1500 6.2 and did a lot of searching, even tried 2 or three mufflers. Being old school i was looking for not to quiet, and not JUST loud... Found the Cherry Bomb and tried it. deeper sound, did not want Just loud, or obnoxious, just old school and the CherryBomb Vortex was it..... good sound, no drone. The Flowmaster was just loud and found out it did not flow as good as the Vortex, in fact some testing showed the Vortex flowed better than most of the mufflers and better than a glass-pack ... Two cents and an old ear is all I can give...

Edited November 24, 2020 by Steve.S
added see coments.