Adam 1 - MAF 0
I just got fuel working on the MS and stock computer for spark. I also removed the MAF, which is a victory in its own. I need to check to see what the OEM ECU does for spark tables without the MAF.
I tried to get fuel and spark working together on the MS but I let the two channels of the coil outputs touch and they were canceling each other out and the flooded the car bad. I couldn't even get the OEM computer to restart the car from it. Plus my TPS isn't hooked up for flood clear yet. Anyways on to the details.
I went to NAPA and purchased: ECHTS5100 - Caged Air Intake Temp Sensor
I also bought: ECHTSC300 which is the connector for above sensor.
Cost me $46.00
I wired one lead into pin 20 and the other was spliced into the main MS ground. Boom instant ait temp readings.
Connect ECU pin 2U Yellow to pins 32&33 on the MS
Connect ECU pin 2V Yellow-Black. to pins 34&35 on the MS
Connect 2U Yellow to pin 32 on the MS
Connect 2V Yellow-Black to pin 34 on the MS
Connect Y2 White-Green to pin 33 on the MS
Connect Z2 Green to pin 35 on the MS
1.6L Fuel Pump Relay
I also had to add a relay to switch the relay for the fuel pump. The megasquirt fires the fuel pump by shorting pin 37 to ground. But, Mazda uses 12v to switch the relay for the fuel pump on the 1.6L. So I spliced into the MAF cable there is one plain black wire in the harness. This is the wire that needs 12v to switch the OEM relay on the 1.6L.
I used an automotive relay to convert the megasquirt fuel pump output to 12v.
Pin 87 was the black - fuel pump relay wire that needs 12v.
Pin 30 and 86 need to be connected to +12v
Pin 85 was connected to PIN37 on the megasquirt.
Also, a benefit of using a relay is it doesn't interfere with the operation of the MAF. When not using the megasquirt.
You guys suck :-p
All you have to do is connect 2T Light-Green to pin 37 on the MS and your done.
Tomorrow is dyno day. I want to get fuel and spark running together for the dyno run. If not I'll just be running fuel and I'll do spark separately.