Ok gotcha, very nice headers on there, I am looking for a nice sounding muffler to replace the stocker, but I dont want obnoxious, just a nice mellow tone and no reverb inside the car. I have a straight through glass-pack on my 97 Cheyenne 4.3V6 and its perfect, I get alot of compliments. What do you suggest?

Right now, I have a cheap "stock replacement" muffler with a glasspack and no cat. That makes the car sound really pleasing. I took a road trip to Kansas City with WakefieldL this summer, and the guy there that we met up with is a member of another forum. We chatted a bit, and he said he could never have imagined that the exhaust could sound so good while being so quiet and mellow.

Try at first simply a long Cherry Bomb glasspack to get a deeper tone. It worked for me. If you think it'* not quite right, you could try another brand'* stock muffler. Anything by a brand is going to make your Bonneville louder in my opinion.

Another one of my dads hand-me-down cars years ago was an 85 Skylark 4dr Limited. It had the 2.8HO motor that was Multi-Port injected. It had a single muffler from the factory with dual turn downs. When the car was new it had a nice rumble and a mellow cackle to it. Stayed that way until the muffler got rotten. But what a sweet sound. I thought about a long glass pack but I'd like to retain the factory dual exhaust and tips. I think something form a similar year Camaro might work. About your set up, you dont have a cat? Doesnt that trip your Check Engine Light? Also you said you have a stock replacement muff and a glass pack. Tell me more please.

I had my car tuned by PRJ Performance. I asked for certain engine codes to be eliminated even though I still had my cat on then. The thing is that the sensor may go out, cause a CEL, and yet everything is fine. A person of average mechanical aptitude should be able to work out an issue with a clogged cat sans an O2 sensor checking for things, so I went with that logic until I had the opportunity to have the whole thing just lopped out.

One time, I was rushed while doing exhaust work and only left on a clamp without even tacking it into place. I went to Northeast Bonneville Fest 09 and then drove back, bottoming out in PA, and I had the back part of the exhaust fall off somewhat close to home about a month after attending. I unhooked the muffler and left it in some bushes until I could go pick it up, but it was gone by the time I got back. My dad took my car to CarX and unknowingly had them put on the worst exhaust ever. I've since put back everything but the muffler, which is a pretty bad stock replacement but at least it'* not raspy. The glasspack I had already put on earlier so I had it handy to put it back on there.

My exhaust setup is really the result of me going along with whatever comes up. It wasn't planned, but I think it ultimately works.

If those suggestions wont work out, check the camshaft position sensor as well, and not just it, beside the sensor it also have a second part to it, which it reads info from, its called some kinda reluctor not sure, its hidden behind the timing chain cover. It by itself can go wrong, and cam will read wrong, itll stumble on take off or at first, cause it basically creates misfire.