4" Mufffler
 

I just installed a heartthrob 4" exhaust system on my 96 2500 Sierra with the 6.5 Turbo Diesel. It sounds like crap. It makes my diesel sound like a gas engine. :argh: Does anyone know of a 4" muffler that will give my truck back its diesel sound? The original exhaust sounded better.

I thought the same thing when we swapped the stock muffler for a 4" MBRP muffler (Cummins, though). We took it off and straight-piped it and it sounds perfect now.

I really do not want to straight pipe it. It actually sounds good but it sounds like one mean ass gasoline engine. I want a diesel tone.

I have a universal 4" straight though tractor muffler on my 1st gen. It took the raspyness out but left most of the whistle. It has a unique sound now, very deep but still somewhat loud.

Yeah, I know what you mean. I've heard good things about Aero Turbine mufflers...

In my experiences thats just the sound you're going to get from the 6.5 :humm:

IMO, they sounds similar to the 6.9 and 7.3 IDI, like you said similar to a gasser V8

yah, even straight piped, they sound like one really mean gasser. :) I think it's sweet myself..... I've got a benz with stock exhaust, a 6.5 with Ford 6.0 exhaust (lets the turbo whistle though, gives it a deep tone, and best of all, replaced the rusted stock system for $60. LOL) and my dodge is straight piped.

With all that rattle under the hood, nobody's gonna mistake your 6.5 for a gasser. LOL :choochoo:

Exactly, the 6.5 just sounds like a gasser thru the enhaust, its not going to have the sound of a Duramax or Powerstroke, I would think its partly because of the IDI injection, and partly because of the turbo

When i first heard it i was horrified but over the past couple days i have actually grown to like it. :jump: Even my dad likes it and he hates loud vehicles. I pulled a boat out of the water today and i noticed i had much more power than i am used to having.

Im going to guess and say the IDI plays a bigger part than the turbo, based off the fact of how the 6.9 and 7.3 IDI's sounds