tx65coupe

I have Dynomax Ultraflow mufflers now and love them. They are sort of like Magnaflow but with a bit more glasspack sound. I think the sound is definitely more old school and fitting for a classic car. i have full tail pipes with turn downs at the valance.

I had Flowmaster 40 series on my car for a little while and it the interior resonance and hollow tin can sound on the outside was terrible.

I prefer H pipes to X pipes. The sound with the H is much beefier at idle and less raspy than the X. On a mild street car, I doubt it matters much either way for performance.

I do think that side exit with glasspacks is a cool idea. I've not heard that particular setup with that kit in person before though. I have heard very similar setups that did sound more on the aggressive side, but did still sound good.

imboden

The owner before me put on flowmaster 40's and I hate how loud they are. My muffler shop recommended headers, and xpipe, and magnaflows.

not sure what I will do, but thinking of shorty headers, x pipe, and keep the 40's and see how it sounds.

tx65coupe

The Flowmasters are not going to become less annoying with an X pipe. Do you have a n H pipe currently?

347 stang

I had flow master 40's and they were way to loud and the drone was annoying as hell inside the car. I now have Borla pro xs series on it and love them.

imboden

Nope, no H pipe... just straight out. Muff. shop guy said the x would just get rid of the "crackle" sound... so it wouldn't drone so much.

67mustang302

After going through several different mufflers, settled on Dynomax Super Turbos.

Good performance, while still having a good sound, but not too loud or droney.

sdviking

Love the sound of the tri Y's headers going to an H pipe then to Flow master 40's. Has a nice but not over powering sound to a pretty much stock car. Plus installation on the Tri Y headers wasn't bad at all.

I'm a rookie mustanger but love to tinker.