I know exhaust questions have been asked ad nauseum, but I have one more. I had the large main muffler replaced with straight pipe on my '06 3.7 quad cab this past week. Didn't think it sounded too bad until I drove some hilly highway miles yesterday. It has a sharper tone than I would like and when you get it around 2000-2500 RPM, it really drones in the cab. Which muffler would you guys suggest I put back in to make a lower, more rumbly sound? I would prefer to keep the two resonators right now. My father-in-law had an S-10 SS with the 4.3 with flowmasters on it that sounded awesome. You could almost feel it coming before you heard it. That's more what I am looking for. I would appreciate any input you guys can give me.

 

I have an '05 3.7 and I had the entire stock exhaust system yanked a month after I bought the truck except for the cats. Meineke did a great job: single 2.5" into a Flowmaster SUV50, dual out and split out the back behind the rear wheels. I think this is the low rumble sound you are looking for. I love it and your neighbors won't have a problem with it.

 

I prefer a Magnaflow, I had one on my older Dakota with the 3.9. It was a nice sound, didnt sound like an V8. It was a higher pitched grumble, but it was bad **** and you could here it coming from aways away. Its the muffler I plan on getting for my 4.7