Originally Posted by willwren
Neither will affect performance. Is that what you're getting at? Evap delete would help make it simpler to do a FWI, but it'* simple enough to relocate it or bypass it on your own.
Rear O2 delete makes your choices for high-flow cats simpler and slightly cheaper.
well after i welded my cat on as soon as i started the car when i was finished i get a evap code along with a driver 6 code
which i has come to the conclusion that when i welded the cat on that had somthing to do with it because i didnt disconnect the battery