Dynomax ultraflo mufflers
 

Has anyone ever tried the different length welded ultraflos? I'm putting dual 3" on and I saw they made the ultraflos in a 14", 20" and 24" length. Just wondering if anyone knew how much quieter the longer ones were... I need the flow of the 3" but I don't want a lot of noise in the cab.. Don't get me wrong, I dont want it to sound stock but not droney or crackly either... Just a nice deep rumble and tollerable at 55.

My dynomax catback system has the 20in case and 24-25in overall length muffler in it. Sounds great and you can barely hear it going down the highway. I still have my cat converters still so that does help with the drone.

I'd for sure want the 20in case or larger to help muffle the sound on the highway but still have the good under throttle sound you want.

Cool..... Sounds like what I want.. I have a supercharger, cam and 1 7/8 ARH with the ARH cats... The rest of the exhaust is too small and or doesn't flow enough...

Not a Dynomax..

I run the GMPP branded Borla muffler. It's like 31in overall and its 7 or 8in in diameter.

No drone and has that Borla sound when you get on it. It's a nice deep tone.

Best mufflers ever made especially for the $$ I run the 14” on 2 trucks one daily driven.. zero drone on the highway and loud only when in it , awesome sound... I’ve run borla, Gibson, magnaflow, and I always seem to go back to these :burn: