bostonzmc
Member
I recently put all the parts needed for a gear head tune on my car gapped plugs 170 degree thermostat cold air intake 3 bar map sct x4 tuner and I also had a custom exhaust put on after a couple hours driving I got a p2272 which lead me to believe my downstream 02 sensors were bad so I picked up both ntk sensors installed them started great but went down the road and it started missing on cylinder 2 and it was dumping fuel out the exhaust limped it back and put old sensors back in no luck even put stock tune back on with the 2 bar map no luck any suggestions
