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My 1990 McLaren Turbo Grand Prix Mod Page

Custom Chip (9/14/00)
I have custom programmed a chip with these features:

Desired boost at all RPMs and TPS increased by 50% (max boost about 11.5psi).
Raised maximum boost fuel/spark cutoff from 9.5psi to 12.5psi.
Decreased cooling fan turn on/off times by 10-degrees F.
Removed 120mph boost cutoff.
Original chip was a 27C256 UVEPROM. New chip is an Atmel 29C256 Flash ROM which is erasable and reprogrammable very quickly. That way I can quickly and easily upgrade the software as I learn more about the actual program code.

Performance seems to have increased noticeably with the increased boost!