Originally Posted by
SiZT
Pretty much every standalone ecu can run boost by gear provided they have a reference to what gear they're in at the time (either an actual gear position switch or road speed vs rpm)
Not sure he means just boost limiting or some other method of torque reduction.
Another option...
Built in misfire and/or knock detection as per OEM via the coils, or via crank position reference, with perhaps a knock sensor to back it up ( given knock sensors always pick up background noise. )