I just had my Magnaflow SI/DO (part # 14288) exhaust installed on my ’05 and I’m impressed. I have never had a performance exhaust installed before on any of my trucks, mainly because I’ve been a little nervous about drone and noise, but it sounds really good. Just as everyone has described before, its sounds great when you start it up (maybe a little loud because I leave the house at 5:30 am) and when you get into it but at cruising speeds it sounds like stock in the cab. As far as performance goes I haven’t been able to tell a big difference so far but I haven’t disconnected the battery to allow the computer to reset itself.
I can’t speak for other exhaust systems but as a newbie to the whole idea of aftermarket exhausts I’m impressed with this one. Thank you guys far all your input and advise.

Eric