Power problem

[lowrider]

I have recently been having a problem with the performance on my r50 2002 cooper.:ragin:
At times the car seems to feel restricted of power ,not drastic, but noticeable. It usually coincides with the gears feeling lumpy/ more difficult to engage. Usually the car feels responsive,smooth and lively (especially with the addition of a CAI kit) Hope its not just a typical Midlands box!

Any advice/solutions appreciated, as this is really annoying.

Thanks, Andrew:thumbs up:

[Forbes]

Have you tried putting in some super unleaded, i don't know if it is a placebo or actually helps but i feel the difference. My 04 Cooper is the same.

[lowrider]

Been using super since I bought the car. :thumbs up:
Read a thread that mentioned disconnecting the BATTERY for 20mins to reset the ECU?

Forgot to mention, recently fitted BMC CAI kit and just found out there is a blow in the rear of the exhaust. Though the problem was there before fitting the BMC and exhaust blow!