BlownBird68

Changing out my flowmaster 40's on sbc procharger application, just too darn loud and drowney. Switching to dynomax ultraflows, however heres two dynomax ultaflow mufflers both have different internals

http://store.summitracing.com/partde...5&autoview=sku

http://store.summitracing.com/partde...5&autoview=sku

First one say internals are *Glass-wrap perforated tube
Second one says internals are *turbo style

Which design is quieter? Anyone know, or doesnt it matter? Also why are there ultraflow ss and welded any difference there?

nitrorocket

iTrader: (12)

The 17229 is what I have on my car. Way quieter then the 50 series 3" dual flowmasters I had last year. I like them. They have a deeper rumble over the Flowmaster crackle.

BlownBird68

so im guessing the internal composit of the muffler doesnt matter, as long as its a dynomax ultrflow muffler?

Pro Stock John

iTrader: (34)

For max power I like mufflers where the pipe goes right down the middle.