Vv Timing On R33 Gts-t's?

[Chris Wilson]

Worth keeping on a car with mild hydraulic cams and GT3040R turbo on a Power FC, soon to be M800? How does it work as stock, just 2 timing positions, or is it pulsed to give a smooth transition? Why does the solenoid change state as soon as the throttle is tickled just off idle position? Does it change again after that, or is this thing purely an emissions device? Thanks!

[Craved]

im pretty sure that this is for extra midrange.

i have read the solenoid switches at 1500rpm then back at 4500

i would think it would be slightly gradual since its pressure related transition.

[Busky2k]

I think its the same as the S14/S15 style, so 1050 and 5700 are the RPM range when its activated ie advanced intake timing for better midrange torque.

Its just on/off. No pulsing as far as I'm aware. It will change to "on" when above idle in gear, because its above 1050 rpm.

[Sydneykid]

As the guys have said straight on off for the R33GTST. The R34GTT Neo has infinitely variable inlet cam timing. Helps pass the later/more stringent polution rules.

cheers

[Chris Wilson]

Thanks everyone, is there any documented info showing how the stock ecu alters the solenoid state? Based on just RPM, or load based too? On RPM and throttle position, or including AFM feedback, as well? Cheers.