Those Engineers have constrants to deal with such as emissions and the ability to run on 87 octane, Since I've freed up the exhaust with the baffle delete and plan on advancing the timing and running 93 octane, I should be able to extra more power out of the bike. Keep in mind a engines tune has to be designed to deal with the lowest common denominator. I'm using the term tune very losely here. I come from the EFI world so this whle carb thing is new to me. But in the end its about gettnig the right AFRs / Timing combo Here's an example of a BONE STOCK 2010 STi I did.. Stock VS Tuned.