Quote:
Originally Posted by Kodename47
Hold up!!!
On a WRX the manifold is pressurised, obviously. However I would check the Harrop and the setup for the breathers. Most of the PD blowers put the PCV lines on the vacuum side of the blower (pre-compressor) which means that no change in valve is required as you're not pressurising the system. This is the way it is on the Sprintex.
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The guy I’m buying my Harrop SC from said he never did the WRX PCV valve swap, but he said it was suggested, I believe by Neil at the Racers Line, but he was unsure about how a catch can would effect things. Would retaining higher pressures effect boost, power or be risky on the engine such that the WRX PCV valve relieves more pressure?