Just make sure you aren't running lean, and tha tyou aren't running sooo rich that you wash out your spark, and you will be fine. Your guy is righ though. you need to hit a dyno immediately before you start pushin your car to the limit to make SURE you aren't running lean. 12.2:1 Air/fuel on the dyno should be good. also make sure your timing is ok. AFC's leaned out by extreme ammounts tend to have adverse affects on yoru timing (meaning you could be as high as 30 degrees advance off of the ecu at WOT........in which case if it isn't retarded, you WILL blow the engine at 15 psi or maybe even at 10 becuase of knock). just hit the dyno, get or borrow a datalogger and tune that stuff in.

A.D.P.
"...If you do too much, people become dependant. If you do to little, people loose hope. If you do it right, people won't be sure you've done anything at all."
bring it on............