it to actually run LEAN instead of RICH??? Reason I ask is because I keep throwing O2 codes. P0420 and P0430 (bank 1 and bank 2). Before W/I install I was in the mid 14s. Now im back to mid to upper 12's. Still no clue as to why I am lean like this. Injectors? Fuel pressure? the map itself? I doubt its my fuel pressure cuz its extremely high. Any ideas? anyone?

Russ

 

P0420 and P0430 aren't primary O2 codes which would effect your AFR. It's just throwing emission related codes saying your catalytic efficiency is below what it should be. People have used 18mm spacers from any local automotive store and it seems to clear it up.