I have an HKS EVC IV boost controller, not sure how old it came with the car. With stock twins it worked fine and the stepping motor was mounted near the intake. Now single, I moved the stepping motor to my charcoal canister location, and the evc will not reach the set boost limit. I set it at 1 bar just to test and it will stop at .8 or .9, also inital boost response is not as it should be. Does anyone have any idea whats wrong, is it location of the stepping motor that fried it? Is it just time up for the EVC? What should I do differently when I get a new one?