Hello All,

I am new to Mini so please bear with me. I purchased an 06 S with several modifications (they are listed below). The check engine light is on and throwing P0172 code. The Long Term Fuel Trim on Bank 1 is at -20% at idle and drops to about -10% at 3,000 RPMs.

The car runs great but I can't get it to pass emissions.

The car did have a cat on it when I got it. I replaced both O2 sensors and put on new CAT.

Someone recommended replacing both MAP sensors? Is this the next logical step? Any other suggestions?

Thanks,
Scott

The MODS are:

Madness Water-toAir Intercooler
Madness 15% pulley
Madness Intake
Madness Cowl Intake
CHR Head
Madness 380cc Injectors
Schrick Cam
NGK iridium plugs
Nology Wires
MTH Tuner
Madness Header
Milltek exhaust

 

Are you sure this is an R56? You may need to change this to gen 1instead of gen 2.

 

Reference this thread: https://www.northamericanmotoring.co...0172-code.html.