radium69

Thanks a bunch guys, will test this. Didn't know the ECU would be so sensitive to increased boost 0,45 -> 0,7Bar. Got a consult cable so I will monitor this.

Sorry to bump an old post, but I find this topic has very valueable information regarding the VCT system nissan implemented. I have a few questions remaining for my own R33 GTS-4 +T with RB25DET ECU. The VCT system on my R33 is stock and in use. However, since changing boost pressure, 0,45bar -> 0,75 bar I notice a flat spot starting at 5000 till 6200RPM. This seems to be caused by the VCT not suited for higher boost pressure. Turning it off wil make it like a pig (as said in this topic) But like Paul said, i want it switched off in high RPM, to see if the flat spot will dissapear. How can I do this? - Cut Original positive lead from ECU and tape it? - Then, fit a new wire to sensor, connected to ignition switched 12V source? I understand the reason to go for an ignition switched 12V source, but is it only because of battery drain? Thanks for all the information so far!