This is my home diy version. I have four nozzles and high pressure pump, and it uses water from washer bottle (around 6L) with 20% ethanol blended water. It almost last entire RAC track day last time (15 laps?). by the end of each run, tmic is still cold.

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MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport

The wiring diagram is most usefull, thanks

Thats basically it, but the fuse should be nearer the battery, ie + terminal, fuse, then to pump/switch.

using the Perth-WRX mobile app

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Race Torque Dyno 399 NM, 248Kw @ 20PSI

Straight roads are for fast cars, twisty roads are for fast drivers. I have or am neither.

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