I searched and found two threads that were specifically about it and one guy said he liked it, one had boost creep possibly due to having too small of a wastegate and others recommending other controllers. I am trying to find specific dimensional details about it as well that I can't seem to find. I did find the display size posted on another forum and its 5.25" x 2" x 1" deep. It should fit perfectly into my overhead console.

Anyway I'm only looking to run up to 20 psi at most and would like to have a daily driving mode other than kill mode. If I'm understanding it right this controller can have two preset boost settings and then is controllable from A to Z depending on the spring in the wastegate? How about the length of the harness? The controller would be mounted somewhere under the dash and I would like to put the display in the overhead console so it would need roughly 6 feet of wire there. How are the other values like rpm and transmission gear and speed inputted into the unit? It says it can adjust boost based on RPM as well as gear by gear. If I'm understanding this right between this controller and a properly sized wastegate and spring it should be able to manipulate the turbo similar to how a variable nozzle turbo operates IE varying the boost and turbo response based on engine speed and load?

AVC Type-R Boost Controller, (Silver) APEX Integration

 

I don't know about the apexi, but if you turn off my greddy it is all wg spring, on low is one setting, and on high is another. With mine I have a 8.6psi wg spring, on low it's set at 12psi, and on high it's 16psi. It took me a while to get the gain set so boost wasn't all over the place, but now it is within .2psi all the time, depending on the weather.

 

Thats kind of what I'm looking for. I thought I understood how it worked right and it appears I do. You want whatever weight spring in the wastegate that would provide you with your minimal desired boost and then use the boost controller to increase it from there. Did not realize the boost controller can double the boost over the spring in the wastegate but thats good just like I was hoping.

 

I found a decent picture of the unit finally and it looks like the display also contains the control unit all in one. To put it in the overhead console will likely require the wires to be longer. Is there any issue in lengthening the harness on something like this as long as they are soldered and done correctly? I can't imagine a length of wire being added changing any signals electrically but I thought I would ask.

 

It looks to me like the display could be mounted there, but the solenoid, and the boost sensor would be better under the hood. The harness looks like it might be long enough, but extending the harness probably wouldn't hurt anything.

 

Yea I know the solenoid and boost sensor have to be under the hood. I was referring to mounting the display in the overhead console. I've seen some that have the display separate from the control unit and didn't realize this one had it all built into the display.

 

I got my boost controller today. There is a lot of Chinese writing in the installation manual and what not but I think its going to work out fine. Its just six wires, power, two grounds, TPS, RPM, and VSS. My concern on the harness length turns out not to be an issue. The control head has about a 4 foot lead on it with a connector. That should be more than enough to get over to the A pillar and about halfway down it where I can plug in the lower end of the harness and secure it to the cab behind the pillar plastic. About a foot after the connector the harness breaks out into three leads. One is the 6 wires that get tied into the PCM harness, one goes to the boost pressure sensor and one goes to the solenoid. The lower section of the harness has to be another 6-8 feet long. So far I'm impressed with the unit but it will be a while before I get to put it to use.