I have a 2008 F-250 4x4 6.4L Diesel and am looking to get an aftermarket exhaust system. I am looking for a deeper more powerful sounds and hopefully a little better fuel economy. I have a banks cold air intake. No idea where to start for what brand and type exhaust. Also I want to make sure it isn't going to void my warranty. Any suggestions guys? Also, what else can I do to improve fuel economy besides a programmer? Thanks guys!

 

I'd go with the programmer first, followed by a tonneau cover. I don't think I gained "much" (if any at all) with the exhaust and CAI. 2008 F250 5.4L automatic.

 

If you go DPF back you should not have a problem with warranty...but I am not ford. I see no reason that you would have a problem.

Don't think you will have any real gains but you would have lower temps after the DPF with it.

Sound wise I am not sure.

 

Yeah I already have a Diablo Predator programmer and banks cold air intake. Excuse my ignorance but what is DPF? I talked to FORD and they said after market exaust systems will not void my warranty. Is this DPF the best exaust for performance/sounds? Any other suggestions for better fuel economy? Thanks guys!

 

DPF is the diesel particulate filter. It traps the soot so your tail pipe is cleaner. Emissions component.

Ever notice your truck going into a cleaning cycle? It is to burn the soot that has been trapped in the DPF.

 

Any suggestions on brands? Does having the quad exaust (dual pipes on each side) make it any better? Or just aesthetics?