I know most people put down the flowmasters, but i heard them on the guys truck at the exhaust shop i went to and loved them. Got true duals, 3" all the way back to 2 original 40series mufflers, to 4" side exit tips. Looks the ***** and i love the sound, deep, mean and no rasp

 

Did you keep all of the cats and o2 sensors? I'm curious because I eventually want to go true dual. I like the sound of flowmaster also.

 

I'm with you I love the sound of FLOWMASTERS too!

 

my 2500HD had dual all the way to the muffler, so yes i kept all cats and o2's. For 1500's it takes more fabrication.

 

do you have any pics of the set up

 

I dont think many people put flowmasters down because of the sound. its the performance that sucks

 

Just curious but makes you think that performance sucks with flowmasters?

 

the flow rates are crap on the 2 chambers and 3 chambers. It's just a proven fact. I have a flowmaster but I went with a 1 chamber. they are better then stock but their are alot better mufflers out their that flow alot better.

 

i agree, flowmasters suck. i have a single in dual out flowmaster with a radix. The exhaust was so restrictive that magnacharger had to change the pulley to a larger 3.6 inch to compensate for the restrictive exhaust system. They were seeing like 9 lbs of boost with the stock 3.4 inch pulley due to the exhaust. I'm going with a stainless steel magnaflow now, 3" in and 3" out to solve my problems.

 

Let us know what you gain with the magnaflow muffler. I have been using flowmaster mufflers on some fast muscle cars for years, and engine dynoed with and without exhaust. A few months ago we dynoed a BBC 632 with Dart Big Chief heads for a N/PRO Street car, the engine made 1297hp open headers and 1285hp through the flowmaster exhaust system off the car! The car hold the record in the class at 7.59@181mph in the 1/4 mile and it weights 3300 lbs.