FlowmasterMufflers

This is an often misunderstood concept as many people view a cross-section of our mufflers and assume that they hinder the flow of exhaust gases due to the internal configuration. This could not be further from the truth. Flowmaster’s patented “chambered” design is what sets it apart from any other muffler. The theory behind the design is based on basic principles of physics. By splitting the exhaust stream (exhaust pulses & sound energy) and then recombining them in another chamber, the collision of energy cancels the sound waves, which creates a low pressure area in its place. This resulting low pressure area then helps scavenge/accelerate the following pulses into the muffler and out the tailpipe resulting in a more efficient and cleaner burn, which means more power. Straight through mufflers consist of a perforated flow tube, and rely on packing materials such as steel wool or fiberglass to simply absorb sound. While these mufflers may improve performance by using larger internal flow tubes, the packing materials will burn or blow out over time which results in an increase of sound until it eventually becomes ineffective. The Flowmaster design uses no packing, and therefore will maintain its sound control over the life of the product.

DrX

iTrader: (7)

Pair of Super 50s. Need to make an idle cruising vid once I get the new driveshaft.
Interlake Dragway July 2014 - YouTube

FlowmasterMufflers

What is your Avalanche running in the quarter? That thing looks pretty quick!

TIM Z

iTrader: (12)

Watch the video further and you will find out .

Nice run Dr X !

FlowmasterMufflers

Wow! Just watched it again. The first time I was skipping around. That is a serious Avalanche!

DrX

iTrader: (7)

Yeah, 10.99 first time out. Hopefully a little better once I get things setup right and work on the tune. Not sure I want to crank up the boost.

FlowmasterMufflers

Not bad at all! I can't wait to see what happens once you get everything dialed in.

1lowgmc

FLowmaster super 44 with LTH and no cats. 212/217 112LSA @.608 lift. Loud as hell, but at least the wife wont drive it!

PCM of NC Custom Cam 4.8L Sierra Idle! - YouTube

FlowmasterMufflers

That 4.8L sounds mean!

1lowgmc

Thanks. I love the chambered sound and if its too loud turn the radio up!