What I know:
- When the engine dies, and when I'm trying cranking the engine and it's not starting, TunerStudio gets disconnected. Is this normal? Or is the MS shutting off, causing the engine to die/not start?
- I have a dash-mounted Air/Fuel Ratio gauge of unknown accuracy. Whenever the engine's running poorly, it shows very lean, even though TunerStudio shows that everything is fine. Both are connected to the same heated narrowband oxygen sensor.
- This car is an older build that used to have a Haltech ECU that died. I purchased the car in non-running condition, and installed the Megasquirt to get it running. All of the sensors are working (although the air temperature sensor is off; it shows that the air temp is about 40 degrees when it's actually in the 80s, but I figured that shouldn't prevent it from starting, so I'd fix that later.) Otherwise, I've gotten all of the existing sensors working correctly. Spark is sent out through an MSD DIS-2 Plus, then to an MSD coil pack in wasted spark setup.
- Car is an '02 Protege5 with the 2.0L I-4, forged internals, turbo. Has alcohol injection that I haven't even looked at yet, and will worry about later; the tank has been drained, so I know it's not interfering with anything.
- Car has 42 lb high-impedance injectors; set to 7.6ms flow.
- I know I have good ground on all 6 ground pins.
- When it does start, it smokes black smoke for a while, while the dashmounted AFR gauge shows 'Stoich'.
- It backfires a lot.
Thank you in advance for any help you can provide.