I got a ? I have around 135000 miles on the ol F150 and was wondering if getting a set of the highflow cats from Troyer would be a waste of money. i dont know how long the stock ones are supposed to stay effecient, but Im sure they have seen better days.

2000 f150, 5.4, magnaflow muffler, FIPK

 

I would defenetly say to go with them. I just had mine put on.

 

Did you see any difference