fatboi07

96 f150 straight 6, no cats. From header turnbacks to flexpipe, to y-pipe, (still need to get o2 sensor bung welded in and sensor installed) to 2.5 in oval cherry bomb turbo. Sounds a hell of alot better then no exhaust lol.

miller33541

2004 f150 xlt 2wd 4.6, true duals off each cat 2.5" aluminum side by side pipes 2 flowmaster 40 series with 3.5" stainless rolled tips angled out the back.

lariat5.4triton

Does putting on a new muffler void the warranty.

blk08stx

what about a catback exhaust?

Fordby4

07 F-150 5.4 Magnaflow catback rear exit. Love the sound at higher rpm. Being able to leave the factory spare where it is was a big bonus.

ford4wd08

got a o5 4.6 with a SISO flowmaster 40 series with a Y pipe in dual stainless tips

rampage12

i finally got mine finished today on my 02 5.4 4x4 ...shorties...h-pipe and full dual through thrush welded 2 chamber turndowns...sounds great..better then flow ..with a awesome low,deep sound

reginhild

Not unless a part failure can be shown to be a result of the new muffler. Eg: New muffler welded onto pipe coming from cat - weld area rusts through - probably won't get coverage. However, if the engine blows or the transmission fails, should still have coverage as the muffler had no effect.

Good thread with info (read to end of page): http://www.thedieselstop.com/forums/...rranty-218941/

Info from SEMA on Magnusson-Moss and actions to take if a dealer tries to deny the warranty: http://www.semasan.com/main/main.aspx?id=60128

lariat5.4triton

I just installed the flowmaster super 44 exhaust. I have a single pipe comming out in front of the rear tire. Check out these pics and tell me what you think.

reginhild

I did the "in front of rear tire" also but with dual tips that have an angle cut. I highly recommend dual tips at that location - single tip just doesn't seem to fill in the space quite right.