Last Updated: 7/23/14
Flowmaster Muffler Heat Shield made by Flowmaster

Reviews Muffler Heat Shield Reviews & Discussions:

"the biggest change of all by lowering the torque peak 650 rpms down to 3,150 rpms. The tooter intake manifold spacer lowered it another 250 rpms to 2,900 rpms. But the real surprise was adding the Flowmaster muffler. On the dyno, it dropped the torque peak"

Posted on 07-17-2014, 06:14 PM

"face of the conventional belief that chambered mufflers don't flow as good as straight through mufflers. Even before the tests, I read a lot about the acoustic and flow design principles utilized in Flowmaster mufflers, and these guys are really doing thei"

Posted on 07-14-2014, 12:16 PM

"was one slight difference... Comparative dyno runs: stock Toyota muffler: BLUE Flowmaster Series 50 Delta Flow muffler: RED On the dyno, the stock muffler torque peak was reached at 2,900 rpms. The Flowmaster muffler met and exceeded the torque peak of the"

Posted on 07-13-2014, 07:20 PM

"While one mpg isn't a lot, your gas mileage chart is consistently higher with the Flowmaster muffler, and that's significant because it's outside the margin of error of one fill up. Greg"

Posted on 07-03-2014, 11:31 PM

"Jeez. This thread is REALLY making me want to ditch this stupid ricey Areo Turbine 2525 and go back to a Flowmaster muffler. I've used Flowmasters on 2 of my trucks in the past and ALWAYS loved the way they sounded. Hmmmmmmmm decisions decisions. So you're"

Posted on 07-03-2014, 07:04 PM

"It's direct head to head comparative dyno test results of a Magnaflow and a Flowmaster muffler under identical conditions on the same vehicle on the same dyno machine. You've yet to explain your complaint of how you feel the title is misleading. ;) Greg"

Posted on 06-25-2014, 09:54 PM

"That's good to know. I found this cool video that shows how Flowmaster mufflers are made. It's a fascinating process. And something I didn't know, the tolerances of baffle placement need to be precise to cancel out just the right sound waves. Greg"

Posted on 06-23-2014, 05:33 PM

"I have a flowmaster muffler on my '09 (v6) and it's great. I haven't noticed any loss of power like some people say could happen. It makes a nice sound that isn't too much. If you are looking for your truck to sound different..."

Posted on 06-16-2014, 04:36 PM

"I posted this a few weeks ago, which lays out the sound of every Flowmaster muffler. I wanna get the deepest one, which I believe is the Super 44. I'm either gonna get that or the Super 40. Can't decide"

Posted on 06-07-2014, 09:14 AM

"sale or future installation: ARB compressor (will be mounted somewhere outside engine bay, not sure where yet) Wheel spacers Rear shocks (buddy in fabricating bolt-on shock mounts) Intake Fan shield Flowmaster muffler Headers (if it's possible) Diff breath"

Posted on 05-10-2014, 06:30 PM