I have a HKS EVC EZii, which could be upgraded to become an EVC V. I set my knob to full closkwise position and the boost guage only peak at 1.4bar(20psi) and hold at 1.3(18.5psi).

Does the EVC V have this boost limitation? I'm thinking of upgrading.

 

yes,i think it is like a 36.25 psi limit

 

Problem is that on the Evo7, the standard boost pressure is 0.8bar, therefore you need to take the oem actuator and screw it inwards a little more to raise the standard boost to at least 1.0bar and then you would be able to get more boost out of the evz ez.

 

I don't understand how the actuator can determine the boost, I thought that's the EVC's job. Is that why I get 0.8bar when the EVC is shut off? So the spring tension determines the boost???

 

yes, right now it is set up to 0.8bar, what I did when I had the stock turbo was to cut the rod a couple of mm to force the rod to come out of the actuator, that brought the boost to 1.0bar, the I had the evc set at 1.2 low and 1.6 high.

On the dsm it is much easier, you just undo the rod, screw it in a couple of rounds and put it back, but on the evo it is fixed, that's why you need to cut the rod.

 

thanks for the tips.
I have replaced my stock actuator with a HKS adjustable one. If I do screw it in a couple of mm, would it still have enough travel to open the waste gate flap all the way?
you running 1.6 sounds really hi, I am already worried running 1.4 without engine mod.