I think that most of you guys do it for the sound anyways.

I'd like a LITTLE rumble and any additional power is always a plus.

I pull a 7000 pound travel trailer about 4000 miles a year. I don't want to change the exhaust and then REGRET it on a 2000 mile trip pulling the travel trailer. The AF1 is a little loud towing, but tolerable. I have no doubt that I will like it the rest of the time.

 

i dont tow much anymore, but my exhaust is LOUD when i do! i wouldnt change it though

 

I started off with a true dual system, that was on the truck when I bought it. I towed a lot, and was not very impressed with the low end. Just this fall, I put on a Magnaflow SISO, and it fixed it significantly. Not as loud on the hwy cruising, and a lot more low end for acceleration. I havent noticed too much difference in high speed accel, like for passing or pulling a grade above 3500 RPM, but overall, it is a better combination.

 

I drive 1000miles each way about 4 times a year and mine is pretty loud. The drone of my 2 flowmaster 40s is deafining but i dont regret it.