Quote Originally Posted by Fivefingerdeathpunch View Post
Seeing as you car is newer than most, it runs a different cat check/rear o2 fueling that the older cars.

Not having a cat and being not tuned for it are going to make the car act all sorts of funny and you'll seee that blakc out the tail pipe and terrible gas mileage.
So if I get a tune for my catless dp everything will be fine? How will they delete the cat diagnostics test? If they dont it'll dump full all the time to keep checking for a cat on top of a tune which would not be a good tune since you wouldn't have a locked in afr or even consistent ltft & stft tables. So tuning is not the key it'll help but the cat diagnostics test is what we need to eliminate before we can even rule anything out tune or etc