i have a 2003 f150 xlt 4.6l v8 triton... as of now im running straight pipes... it doesnt sound bad at all... but im moving from my small town to a big town n texas and i already know they're gonna crack down on me... so whats gonna b the best sound and horsepower 4 me truck??


i plan on going with cat back system but not sure who makes the best or if it matters... magnaflow seems to b a good start

 

I've got a custom Magnaflow system. I had my factory exhaust cut off, and replaced with a single 3" aluminized steel pipe, custom bent, with a SI/SO 3"x14" Magnaflow muffler (stainless steel) with a dump right after the muffler (basically a turndown tip made from 3" aluminized steel. I absolutely love it. I noticed a small performance gain (the 4.6L engine doesn't make much torque below 3000 RPM or much horsepower below 3500 RPM), and it was well worth $250. It's basically the same as the SI/SO 3" Magnaflow catback, only with aluminzed steel pipes instead of stainless steel (no snow here in TX, so no road salt and no rust problems). The stainless steel pipe is really what makes the Magnaflow catback so expensive. Also, I was afraid it would be too quiet, that's why I have it dumped. And I couldn't be happier with it.

 

Magnaflow

 

**raises hand vigorously...


Look into Spintech and get a custom setup going. You'll love the sound

 

Spintechs are badass. I had them on my 1999 Mustang GT, and they sounded mean. But they're a chambered muffler like Flowmaster, so they'll drone inside at about 2000 RPM, but if you can deal with that, your truck will sound mean.