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Home » Mitsubishi Evo 4-9 » Intercoolers/Oil Coolers & Dump Valves
A blow off valve is a device that releases pressure from the turbocharger when the throttle is released. It ensures that the pressure shock load on the turbocharger compressor is minimized and encourages the turbocharger rotating group to continue spinning during gear changes. APS designed the APS high volume twin vent blow off valve specifically for the Lancer Evo in tuned form.
The large primary vent is designed to plumb back into the inlet tract and ensures the best driveability during cruise conditions. More importantly, the APS BOV cures the problems seen with after market 100% external venting blow off valves. And under spirited driving conditions with the turbocharger running high boost pressure levels, the APS twin vent blow off valve continues to vent through to the second stage port in order to expel the maximum amount of charge air possible.
Fine adjustment to blow off valve operation can be performed through the actuation adjustment screw for optimum configuration.
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Evo 9 SWB is competing in the UK Time Attack series for 2019, Keep
an eye on our social media for updates and the Norris Designs
YouTube channel for in car videos.
Version 3 supercharger kits proving themselves out there all around
the world! Zero lag!
Version 4 dry sump kits in stock and ready to ship. Featuring the
SUPERB Auto Verdi oil pump.
Colt Ralliart is competing th CCRC Saloons Championship again in
2019. Going great so far!
Designs are the UK agent for Bullet engine blocks. We stock 4G63
& 4G64 versions. As used in our Evo 9 SWB demo car.