View Full Version : flowmaster 40 vs summit knock off
02-12-2008, 11:20 PM
is the flowmaster 40 worth that much more then summits knock off im thinking of running 2 one on each inlet then dumping...i have a 96 yukon 5.7... has anyone ever ran the summits or have any input on them, thanks
02-13-2008, 12:52 AM
same exact muffler... i've had the Summits on 2 trucks, and Flowmasters on 4. i've got a thing for buying slightly used Flowmasters for dirt cheap, otherwise they'd all be Summit mufflers.
02-13-2008, 05:28 AM
I got a generic Flowmaster 40 series from www.performance-curve.com. Works great, sounds good. Here is a vid...
02-13-2008, 10:26 AM
thanks for the quick response guys
02-13-2008, 10:58 AM
does anyone know if my truck, 96 gmc yukon 4x4 5.7 has 2 inch inlets, thats the number i came up with by doing the math from the circumfrance, thanks for the help
02-13-2008, 11:39 AM
You have factory 2" inlets. I'd purchase 2.25" inlet/outlets though.
02-15-2008, 05:49 PM
i got the summit muffler it sounds pretty good i think heres a sound clip of mine
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