2010 mini cooper s. I just finished installing a rebuilt head, chain, a rebuilt fuel pump, new 02 sensors . Car runs great idles smooth with no engine codes. The only issue is the half power engine light. Has anyone had the half power (limp mode) light but have full power? Car has 180k on turbo. The coil packs and plugs are a year old. Any suggestions? I may change the plugs they were pretty dirty from when it dropped the valves. Have bad plugs ever caused this?
Thanks