Hi guys,
If you need any info about how to fit a MS3+MS3X onto a 3SGTE gen 4 ST215, I'm your guy. I'm currently running this setup. I'm using every stock sensors and actuators : TPS, MAP, CLT, MAT, knock sensor, crank angle sensor, cam angle sensor, IAC, stock COPs... everything. All that through the stock wiring harness so I can switch to the stock ECU in 30 seconds.
I'm using some other MS3X input/output to do the following :
-boost control using the DIYautotune solenoid
-tacho output driving my stock tachometer
-on-board MAP sensor as a barometer
-launch control using the cruise control clutch switch as the input
-Spare outputs to drive the radiator fan relay and the stock Check engine light (currently using it as a shift light)
I've joined a wiring diagram showing how my adapter harness (MS3/MS3X to stock harness adapter) is built.
Seriously, you can't go wrong with MS3+MS3X.
If you have any questions, just ask!
Sam