give me a call. afc hack actually runs a lot more advance at low boost than it does at higher boost and if you have a turbo that spools quickly w/ little throttle position you will be boosting lean because of the o2 feedback and stoich conditions.

if you're going to run the afc hack you'll need a timing control like an msd btm and by the time you've spent the $ on the afc, btm, install, and tuning you've spent more than you would on a chipped ecu and tuning.

chipped p28 and tuning can be the same or cheaper and full control of fuel/timing than the afc is.