Will MagnaFlow Exhaust be Too Loud in the Cab of a 2004 GMC Sierra 1500 5.3 Liter

Question:

Iam wanting a nice sound, but not alot of drone in cab, but not a sissy sound, like the stock muffler,is this what i would want ? I have heard flowmaster 40s are to loud

asked by: Steve B

Expert Reply:

MagnaFlow exhaust such as # MF15778 has an aggressive, throaty sound. I had a set on a Grand Prix GXP with the same 5.3 liter motor (see video link). Now in that car it did have a drone inside the vehicle but so did the stock system so it didn't bother me. On a truck though the distance is greater from the cab to the exhaust so it likely would not be as loud in the cab of your 2004 GMC Sierra especially with a side exit, single pipe. One thing is for sure, it will sound good. I haven't heard a MagnaFlow system yet that I didn't like!

expert reply by: Michael H