i recently did mpfi and have a delta 272 cam in my b2 and with the new pm6 my rev limiter was bumped up to 7k rpm but it still feels low all the way up to 7 i never feel the power drop,i know i can retard or advance my cam, but im looking to get my ecu chipped or a new 1 thats set to 8k or 8.5k for the speed govern disabled as well. what would be the best way to go about this is there good online stores that have chipped pm6s or would it be better going with another ecu?