[scheides]

This is probably the 2nd most asked question, right after 'how do I hook up a mbc?'

No one's going to be able to answer this but you and your datalogger.

To start, how about some details about the car: what turbo? what other mods? what type of fuel management? what type of fuel?

This may sound hypocritical, but otherwise it's like asking a reeeeaaaly slutty cheerleader who's drunk how many...ahh, nevermind, just give us more info!