Mine is untuned at the moment and I actually got a got a gain from the o/r x. So that is not always true.b) will make the car run badly unless the computer is 'tuned'
Technically, yes. You won't get any arugment from me. But frankly, neither is 120 in a 65 and how many times do people post about it over a week's span?Keep in mind, removing them is a) highly illegal
Not necessarily true. The Coyote has front wideband O2 sensors that can compensate for anything going on that's not exactly right. But it's by no means a fool proof system and I think most of us would still recommend getting it tuned.b) will make the car run badly unless the computer is 'tuned', equalling more $$ spent. Seriously, the OE cats are pretty much the best ones you'll find for the car.
Are hi flow cats worth it!?