I don't think those two should be compared side by side. lol
I <3 my Flow 40 SI/DO
Go for the borla if you're looking for performance.
Originally Posted by EricTodd
It depends what Flowmaster you're talking about because most are not as loud as a Magnaflow. A Magnaflow muffler is usually just a straight through design (glass pack) instead of chambered like a flowmaster. And Borla is a lot of hype and WAY WAY over priced. If you don't want it REAL loud get a chambered muffler of any brand and put a resonator (glass pack/cherry bomb) in the middle of everything to give it a nice sound. I make custom mandrel bent exhausts for fun on the side and speak from a lot of experience.
I need a resinator bad! I got some nasty poppin coming out my dual side exit when I let off the throttle.