Hi all, i have a 2008 cooper s that is misfiring severly and overheating. p0300 p0302 p0303 are the codes if i remember correctly. It misfires under a heavy load or above 4000 rpms it seems and overheats after only 5 min of running. Any suggestions would be of great help. Thanks in advance - MCS9211

 

I would highly recommend that you call a Mini dealership and have it towed in. I am assuming that it is still under warranty.

 

sorry, i put this forum under the wrong section. its my first day on here. I dont know if its still covered by warranty - it only has 9000 miles on it but i have aftermarket intake, exhaust, intercooler, and boost tubes. Do you think it will still be covered?

 

Yes. They would have to prove your mods caused the damage.

 

Ok, thanks. Im going to call the dealership.