why not use hondata?
just like mxs said, get a chipped p28 and have your tuner burn a basemap on your chip. then put the chip in your ecu, dont hit boost on the basemap. wait until you get it tuned and then you will be able to hit full boost.
some tuning shopsmight have that service available but i sent my ecu to these guys and their service was awesome.
http://www.phearable.net/
http://www.phearable.net/


