anyone have a part number for magnaflow's high flows to replace our stockers. 05 5.4L thanks. also would an s&b intake be alright to run w/o tuning or is the 3" af1 the only one that won't run ya lean?

bryan

 

i have em on my 4.6 made my truck soooooo much louder no other truck compares with stock cats. ive never had any prob

 

anyone?

 

part #s 94306, 94006, and 94106 will all function properly on our trucks. All 3 numbers are Magnaflow cats, and are listed in order to calmest to loudest, though the internal straight design still makes them a very loud cat nomatter what size.

 

thanks darren

 

No problem. These cats are available by Summit Racing, and Performance Peddler to name a couple. Make sure the rear O2s get mounted after the hi-flows and there will be no errors.