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Old 04-28-2018, 03:06 PM   #9
Irace86.2.0
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Quote:
Originally Posted by Kodename47 View Post
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.
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?
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