mustangflanagan
Senior Member
You going to need some non-foulers in the rear O2s at the least.
We have "plug and play" non-foulers that are already drilled out for your O2 sensor to fit.
O2 EXHAUST BUNG EXTENSIONS NON FOULERS
The slow response code is for the front O2 sensor on bank one and is causes by a bad O2 sensor, too much fueling or an exhaust leak possibly.
What side is bank 1 and o cleared the code hasnt come back on yet after 100 miles