Jblake

So every now and then. I hear trucks like mine (90s) drive by me and they have a real loud and aggressive sound to them. I'm not sure of it's just a race muffler or a single chambered muffler or glass packs. But I'd really like to figure it out and have mine switched out for whatever it is. Right now I'm running a thrush 2 in 2 out 2 1/4" piping. Just little stuff. Didn't want to get into changing it all. I've heard a few with single chamber mufflers and it's kind of how I would like it. But can't find a single chamber with 2 1/4 pipes. What's the etiquette on reducing a muffler in and out 1/4 inch and running 2 of them? Anyone have an obs vortec 350 that's aggressive and loud? The thrush one isn't as loud as I would like. Or what do people think of running 12" glass packs? Anyone have them on their truck? Power loss? Anything? Thanks for the help!

WhiteChevy3

Just cut the muffler off if u want it loud as possible. Otherwise get a bullet muffler or something.??

craigsix

im running kooks 1 3/4" long tubes with catted y pipe into single 3 inch summit glasspack with turndown before axle. it is loud at wot.

Tx5spd

My guess is maybe they've took their Cat's off ....

Jblake

I can't see it being no cats around here. Won't pass an e test without them. And it didn't sound like it was just straight piped either

Do you have a video of your truck Craig? I wanna try to figure out what it is and see if that's it. How do the summit glass packs sound? Did you lose any power at all? How long is the glass pack on it?

mattjones

[QUOTE=Jblake;5101410]I can't see it being no cats around here. Won't pass an e test without them. And it didn't sound like it was just straight piped either
alot of guys here dont run cats along with myself and i pass emissions and i dont have any check engine lights on. its all in the tune my friend

Jblake

Did you just have the codes pulled right out of the computer Matt? What program was used to tune yours?