Looking for someoone who has done this. I have a Link in my 02 wrx. Planning on a version 7 motor, but I cannot get a staright answer on controlling avcs with my link management. I do not want to go back to a reflash and a piggyback. I know this is possible, I personally dont know how. I have a couple different ideas in my head on how to do this, but hopefully someone out there has already done it. Any useful information is appreciated. :confused:

Not going to happen. The reason is that the system uses oil pressure to move the cams and does this based on the AVCS cam sensors. You need a closed loop system that will locate the cams and figure the duty cycle need to and variate that duty to meet the advance that is called for in the map. This is different left to right on the engine and the factory ecu has two seperate channels so it can keep the cam banks close.. even then they are often times off 2 degrees.

Without a closed loop system you would be blindly pulsing the solenoids. You would have no idea if the banks where matched and you would have no idea how much advance you are getting. The WRX Hydra uses this meathod and I am not a big fan. You never know what you are gonna get... The later STI hydra watches the cam sensors.

As far as getting a link to work its probably not going to happen as the link cannot read the cam sensors and offer closed loop function. I have spent Many, many hours tuning the AVCS cam maps. A change in advance changes the VE of the motor in a huge way. The dynamic compression is also changed. As a result even small degree change can require very different timing and fuel maps or the advance will actualy hurt performance. The idea of finding a fixed value to pulse to "hope" for 5 or 10 degrees of advance and then having that shut off at an RPM point is a bad one. As temp of the oil changes and temp of the motor changes duty cycle needs to be varied. This is a hydralic system and when you change the weight of the oil you change its action. You might get 20 degrees when cool and 5 when hot for example... You will never be able to get your fuel and timing optimal for such a change.

I wish you luck down your path. I honestly believe you are better of using a stock ECU with a Utec or just a reflash depending on your mod level. If that is not an option then ditch the AVCS cams for some non AVCS cams with more lift and duration. Thats my advice.

CLark