I've got an '02 ext cab 5.3 Sierra I want to do some exhaust work to. I plan on bolting some JBA headers to it, but I don't know if I should go with a Flowmaster cat back or the JBA Evol cat back. The JBA setup sounds good....real throaty....the Flowmaster sounds quieter, kinda muffled.

Just wondering if anyone has some feedback for me.....I want it to sound good, but not obnoxious. Thanks in advance!

JBA....."5.3 Yukon"

Flowmaster......"70 Series 5.3"

 

if yo want more sound don't do the 3 chamber, yes it will be muffled so put in a 40 series and that problem will be taken care of.

 

If you want a Flowmaster get the Super 40 muff.

 

I'll prob stay with Flowmaster......I went to school with the vice president's son up in Santa Rosa, CA.......I may be able to get the hook up

May look at the 50 series....anyone got any wav files?

 

Are the ASM long tube headers any better?

It looks like quite a few aren't fans of flowmasters......are there any mufflers that are built specifically for GM trucks?

 

JBA versus Flowmaster..... JBA!!!!!

 

Go with JBA. I had flows, they suck major donkey *****. I lost a lot of low end torque

 

yeah i have flows now and i dont like em....i think i might be going with JBA in a few.....

 

Any thoughts on the Magnaflow setups....everyone over at GMFullSize recommends 'em. Between the 14" & 18" muffler, the 18" would be a little bit quieter which is what I'm going for.

 

magnaflow is really top dog around here also for price, performance and sound.