the 9:1 isnt that high!

Also the omex will be mapped using the knock sensor capability and also using the wide band lambda control functions so will be fulling correctly and knock wont be an issue.

Also it will be running optimax at all time anyways!

red16 - yeah i have heard of people swapping and changing cams to try to get a better match between engines but its not something that i would like to do by trial and error really unless soemone could give me good proof that the aftermarket cams are of a similar profile. Then it would prob be cheaer to but the aftermarket ones anyways.....