I was planning on getting high flow cats for my 4.6L 1999 F150 and i was hoping someone can give me some info on them so i know what to do. and what kind i should get and things like that.
and what kind of performance and sound increase i should expect from them. thanks

 

you can get a pair of Magnaflow Hi Flo cats off of ebay for a little over 100 bucks shipped. Ive heard labor usually runs +/- $150 for installation. I believe the ones our trucks use are the 94000 series with 2.5" pipe. Ive heard they gain alittle low end torque and between 20-50% sound increase depeneding on what muffler setup you run. Im currently looking into hi flo cats to complement my straight pipes....i bet that would sound good!

 

thank you alot..there are many 94000 cats which one is it? does it need an air tube? where are the sensors...only if it wasnt raining id go out there right now but can someone tell me if it needs an air tube and things magnaflow 94000 cats go there and tell me the number please...you know what it would be easier if they just put what fits on what