January 6, 2005Hi everyone. New member here. 2004 GMC Sierra 1500 extended cab. 4X4. 5.3 engine. Here's what I'm hoping for: Headers (i understand longer = more low end power?) Possibly aero turbine muffler? Definitely dual exhaust. Air intake. Just want nice sounding, more powerful truck. The 5.3 is a decent V8 isnt it? (by the way, I tow a boat during the summer) Any ideas or info. from all you guys is appreciated. Rob.
Forums : Aftermarket : New Truck..Suggestions? (985 Views)
January 7, 2005the 5.3 is awsome. if you want duals just forget mufflers and get true duals no mufflers put on at a local shop. should run around 300-400. much less then an aftermarket exhaust. if you go to my gallery you can listen to what that would sound like. i would also recommend a k&n open element and a programmer/tune.
May 14, 2005Need to save up for a nelson or westers custom tune!!!!! You'll never believe the gains you'll see. You'll have a permanent smile!
May 16, 2005You're not going to want to go without muffler(s).
My exhaust guy actually talked me out of headers - I was looking at a set of JBA's. He did mention that they're beneficial under heavy towing loads. I'd start with an intake and a nice exhaust, and then go from there.
I've run both K&N and Volant intakes and can speak highly of both. The Volant is a bit more quiet, and the airbox is classy looking. I love the K&N, though, and it is a bit less money. In terms of exhaust, I've run both Flowmaster and Magnaflow mufflers. I tend to prefer Magnaflow, if for no other reason than they sound different than the Flowmaster...which it seems like everybody is running.
I can also highly recommend the Wester's custom tuned PCM. I've bought two and am convinced there's no better performance mod.
September 10, 2012So it`s come time to do some modding to my gmc truck and ive saved quite a bit of money up...what ive got is in my sig and also ive got a second gen manifold in the process of getting installed with a twin turbo kit not sure on what turbos im gonna use yet tho. Also id like to make around 600-700 hp when im done