The install instructions are on their website here:
http://www.unichip.us/system/uploads...structions.pdf
It's just a matter of unplugging some existing sensors, plugging the unichip harness in their place, and then plugging the factory harness plugs into additional plugs on the unichip harness. The Unichip itself is taped to the top of the fuse box.
Also as mentioned in the latest Visconti thread regarding boost control via Ecutek
Quote:
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Wastegate duty control for boost or airflow error (Boost control for naturally aspirated vehicles by re-purposing the Carbon Purge Canister solenoid as used on our Supercharged BRZ prototype
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So they are re-using the purge solenoid for closed-loop boost control.