I just got a nice new shiny EVC EZII last week, same as the EVC 5 minus the display screen.. same stepping motor etc. Well I have had nothing but a headache trying to get it to work, I posted to the HKS forum in hopes of a reply soon.. if not I am going to call their tech line which I hate doing. Here is the post from the HKS forum:



I just picked up one of these new units last week, finished installing it on my TO4 equipped FD RX-7. Went out to test it and immediately hit boost cut 1.1bar! Thank god I didn't blow my motor, but now I can't figure out why it isn't opening the wastegate. I disconnected the O line that runs to the top of the wastegate to make sure it will still open, it opened up just fine at 10psi like it should. As soon as I put that line back on it was boosting too high. The unit in the car is also blinking at me, whether it is 'on' or 'off' the power light just blinks over and over. This is not the A or B setting button blinking like described in the instructions. I've also already tried turning the knobs clockwise/counterclockwise to no avail.. there is no previous boost setting locked in that I can tell.



I am positive I have the stepping motor installed correctly with the lines run correctly, I've done tons of boost controller installs before so I know nothing is wrong there. Is there some sort of communication problem between the control unit and the stepping motor that the blinking is indicating? I also reviewed some old EVC4 instructions I had around and it looks like you guys switched the 'O' and 'I' ports on the new stepping motor..is this true or are the instructions with the EVC EZII wrong?



I just wanted to post this in the hopes that someone else has had this problem. I recently spoke with a MKIV owner having the same problem I am. I am not intending to drag down the HKS name at all, for all I know I could have done something wrong on the install or used a bad ground..who knows. Anyone else heard of this?



Matt