[sleeper]

HKS, 1-310-763-9600 has a supplemental install specific for the Supra, but a majority of the members do not recommended it because it taps the pressure tank and could decrease the pre-spool of the 2nd turbo.

The recommneded way of installing it is the Blitz DSBC way at http://www.mkiv.com/techarticles/blitz_dsbc/index.html