Thanks for all the input. I think this is going to be my next muffler. I want something with a mellow tone upon acceleration, but quiet on the highway. I am glad to hear that this muffler seems to do that. I will just have to decide 2.25" or 2.5" pipe.

With the PV 2 muffler I have a 2.5" pipe going from the y to the muffler and from that I have a 2" tail pipe exiting through a 2.5" tip. Initially I had 2.5 pipe all the way from the cats to the tip. This was way too loud and embarrassing. Any acceleration and you could not talk in the truck. After serching through the vehicrossinfo site I decided to switch my tail pipe to 2". This helped quite a bit. Now under acceleration you just have to yell to be heard. I put on the tip for some looks since the truck had a deeper tone to it. The 2" tip just looked silly.

The muffler is nice and deep at idle and with little acceleration. Anything above 1800 rpm and it sounds like a scream instead of a growl. Part of that is because it is a V6 and not a V8. Another problem could be the placement of the muffler. the shop put it on slightly forward of where the stock muffler was. It is just too loud for a Trooper IMHO. It is very loud in the truck and like I said acceleration makes it louder.

I was home for the weekend and asked my brother to drive my truck while i followed. I must say that it is not quiet cruising either. I knew it was loud since I can hear it in the truck, but didn't realize how loud. Initial acceleration sounds good, but then it get high pitched. Even just criusing I could hear the truck from 2 carlengths away and it didn't matter if I was infront or behind the truck. The sound was loudest next to the truck like where the muffler is.

John, The ECB is doing great. I like the look up there on the front of the truck.