The Evolution Powersports Arctic Cat Z1 Turbo billet boost re-circulation valve (BRV) is a direct replacement for the factory BRV valve, but functions differently and is far more durable and reliable with high boost applications. The addition of our valve greatly improves responsiveness in on/off/on throttle situations. Mountain riders will appreciate this when they are doing a climb and have to let off the throttle to do a direction change, then get back into the throttle. Trail/Lake racers will notice substantially reduced lag when coming out of a corner because the turbo will remain spooled. This upgrade also solves the compressor stall issues that plague the stock valve. The EVO BRV has additional safety features as well. Our valve has a .8″ ID inlet and outlets compared to the factory .4″ ID (look at the inside the outlet and you will see how small the opening is) What this means is as a safety device, the EVO BRV can bleed more boost pressure than the stock valve when commanded by the ECU to protect the engine. This is especially critical with higher than stock boost or big turbo setups. The EVO valve was designed for our 1000+ hp turbocharged Porsches and recalibrated for the 1100T. The kit includes new silicone intercooler and intake pipe connector hoses and European style hose clamps and silicone vacuum hoses. The vacuum hoses are pre assembled with Oetiker clamps. Fully detailed instructions are included with the kit.
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