Multics Posted December 16, 2008 Share Posted December 16, 2008 I have an HKS EVC4 boost controller in my R33 GTST setup at 0.85bar. I noticed that it does not hold 0.85bar across the entire RPM range, it gradually drops to 0.72bar at about 4700rpm. Do you think it's the boost controller's solenoid? I haven't noticed any air leaks in the IC pipes etc also running standard recirculating valve. Quote Link to comment Share on other sites More sharing options...
Multics Posted December 16, 2008 Author Share Posted December 16, 2008 Anyone? Quote Link to comment Share on other sites More sharing options...
n boost Posted December 16, 2008 Share Posted December 16, 2008 Sounds like the solenoid. Mine did a vey similar thing when it went, try opening it up and cleaning some cr4p out of it. Are you using the hks filters? Quote Link to comment Share on other sites More sharing options...
Multics Posted December 16, 2008 Author Share Posted December 16, 2008 No, there's no filters I guess I'll have to get two and install them as per the manual. Is it safe to open it, what did you use to clean it? It's quite interesting though, why would it drop pressure only after 5000rpm and not before? Quote Link to comment Share on other sites More sharing options...
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