| Need to do a compression check to see if you are down. If you are down you will have leakage and then you need to find out where it is going: past the piston rings, through valves etc.
You can also check your boost pressure to make sure you are boosting to what you should be.
 Stock Cooper S  @270+BHP 13.7@103.9 www.minitorque.com
ULTIMATE BMW SHOW 21st Sept 2008- Santa Pod Raceway | 
