After much debate, I have decided to use a Megasquirt for my 818s ECU, mainly to simplify my harness and my build… I will document the project here for others benefit.
The motor is a 2000 JDM EJ205 removed from a WRX Wagon with a TD04 turbo, no AVCS, no TGV’s, no CAT’s (Its nice living in Alberta!) The engine will be equipped with the following sensors:
$_57 (8).JPG$_57 (12).JPG
After-market Cable throttle body w/TPS sensor
Stock PWM Idle valve
Stock 550cc yellow top side feed injectors
Crank belt pulley 36-2-2-2 tooth trigger
Stock crank sensor
Stock Wasted Spark coil pack with integrated igniter (Diamond, PN FHO161)
GM IAT sesor
Stock Coolant temp sensor
AEM wideband O2 sensor and Gauge UEGO Controller
Microsquirt II V3.57 with DIYAutoTune’s DB37 Harness
The plan is to remove the stock 6 tooth crank trigger and replace with a newer style 36-2-2-2. This way I should not need to use the cam sensor for timing of the MS2. The 6 tooth vs the 36-2-2-2 gears are shown here.
JDM_vs_USDM_Crank_gear.jpg
I have created a preliminary drawing of the system here for reference…
Franks818s.png
The MS2 will be set-up for Batch Fire mode Injection and Wasted Spark Ignition. Here are pictures of the Megasquirt II V3.57 with harness.
IMG_1128.JPGIMG_1129.JPGIMG_1130.JPG
This is what I have researched and understand so far and I'm in no way and expert on the Megasquirt, as this will be a learning experience for me. Please if anyone here has experience or recommendations to share it will be welcomed and appreciated.
Updates to follow..
Frank