I'm interested in knowing whether or not these wheels are going to work with the MS with or without code changes... I am using a MS-I v3 with msns-e 29u.
I have no trouble getting a tach signal on my test bench by using the hall sensor and waving the cam trigger wheel in front of it.
Last time I checked, the 2G wheel (presumably the same as the EVO4+) could not be decoded by the MS. I don't understand the differences between the 1G and 2G, and when I asked here nobody replied. Any chance of a 2G decoder in the future?
Darn, I really want to figure this out and I have ALL the OEM hardware available to me and a handful of cars to test with. I don't know assembly. I'm staring at it right now and it's just not making sense to me! Hehe
Need the code from an Autronic unit.
I'm going to keep playing around and see what I can come up with...
Jarmo, thanks for replying. I am still waiting to get the shop manual, but do you know what the wings on the cam wheel represent, if anything? Also, does that "divet" (missing V-shape) on the crank trigger represent TDC?
EricR287 wrote: Also, does that "divet" (missing V-shape) on the crank trigger represent TDC?
Can't help you with the rest, but the V is for aligning everything when doing a t-belt swap ect. If I remember right it sits at about 1-2 oclock when timing it all.
"V" is tdc mark and alligns to mark on the aluminium front cover.
If I remember correctly cam sensor should output "0" when iron "wing" is front of the sensor.
Stock ecu uses cam sensor to decode fuel injector sequence as it is fully sequential.
Did you have your scope on AC when you measured that waveform. Cam sensor should be hall and it's output should be about 0-5V.
I can look those sensors and timings more closely when I have rebuilt drivetrain back to working order as we just blew everything from trans to rear diff and we have 10 days to next race and still waiting for the parts
Evo8 workshop manual dvd image is floating on the internet, perhaps fastest way to get it.
It seems as though I do not have the correct cam wheel since my wheel has an equal distance between the vanes. In the one from the manual the vanes are closer to each other so the neutral time is longer and the vanes appear to be closer in size because their wavelengths don't differ as much.
Even with the manual I still don't understand how I'd go about setting it up. Still, I will keep plugging away...
On my test bench, while using a full engine harness and both of the trigger sensors, I am able to get it to light the LEDs for coil A and coil B. I used the settings that the DSM/4g63 uses for triggering. I'm guessing this probably won't work, or will it? I still haven't tested on a car as I'm waiting for VB921's to come in.
It appears the wheels aren't too different between the 1G and EVO.
Your original coils should have built in power transistor so you don't need vb921's. Original coil have 3 wires: gnd, 12V and signal from ecu. You can drive them directly from led outputs.
Now I got the coils to fire the plugs on my bench. Except it resets the megasquirt almost every time it fires, if and only if, I ground the plugs. However, they fire grounded or not. What other areas (ie. resistors) can I make adjustments to?
Just an update: The discharge must have been grounding itself out to whatever it can find. It would make the sparking sound, but I couldn't actually see it happening...
Still, I am working on the reset problem and will see what I come up with...
Try adding resistors to coil control lines. I have not tested what their resistance could be but try different values.
Both sparkplugs ground's at the same coil must be connected together or it will try to spark straight between plug tips. Plugs "ground" don't have to be at the same ground what ms uses.
After 2 attempts on 2 separate days to crank the car I'm just not getting something right. It barely stumbles, but doesn't show promising signs of starting. Does anyone know for sure if the Lancer Evo 4+ trigger wheels aren't going to decode correctly with the current code? I thought the 1G CAS was used mainly for mechanical reasons... to keep from having to do some machine work, not the signal it outputs?
Anything else I should try?
What works:
Fuel pump relay and fuel pump.
TPS.
IAT.
CLT.
Coils fire on the bench when I manipulate the 2 hall sensors.
Injectors are getting constant +12v and MS is cycling ground as needed.
Not getting any resets.
Tach is showing in megatune, about 150-250rpms when cranking.
What I've tried:
Cranking dwell time: 3-5ms
Trigger angle: 72-75
Spark output: inverted, using the standard power transistors in the coils. If i set it to non-inverted the coils get very hot pretty quickly.
After soaking up more information about the wheel decoder I think I need to mod the board to read the main trigger as rising rather than falling. The reset trigger should also be rising. I will see how this works...
Continuing to an old topic.
I'm building Ms to my frieds mitsubishi and he is using EVO 8 waste coils and I were wondering how to control them?
Is the this the right way
And does anyone have any suqqestions on the dwells?
