Turbosmart Silicon Double Hump Silicon Hose 2.25" (Black) chemical guys exterior care The Atomic Boost Controller was

The Atomic Boost Controller was tested on an MY02 Subaru WRX (whose only mods were a turbo-back exhaust) back-to-back with the factory controller

Buying all options will save you 10% off the whole kit combination

if you are using this in the R33 GTS25DET "Big Box" you will need the R33 Bush

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Turbosmart Silicon Double Hump Silicon Hose 2.25" (Black) chemical guys exterior care The Atomic Boost Controller wasHigh performance multi layered Silicone hose. Constant temp resistant from 50 to 170 degrees Celsius ( 60 to 340 degrees Fahrenheit) and pressure rated to 220PSI with a 5mm wall thickness.