Ok fellas, what brand 02's are you running on your cars??? I changed mine after the rebuild with Bosch 02's from Autozone. I keep throwing 02 codes and most people i talk with say they are junk on boosted cars running methanol injection. Anywho i'm running 10-12 psi using a Snow stg.1 meth kit. The Snow kit pump is set @ 170psi using a 375ml nozzle with 50/50 methanol and distilled water if this info helps anyone. Most peeps are telling me to go with the factory Ford or Denso 02's. Any suggestions????