Hi all!
My turbo iX is so close to running! But I'm baffled. The MS refuses to produce spark. It's an ms2 based unit that was built by someone else and then set up by SSSquid for my specific car- he just replaced the failing ignition driver and some other things and we were fairly certain that would solve the no spark issue. He's been extraordinarily helpful and has spent probably way too much time working on this ECU for me. I imagine he's starting to be as stumped as I am.
The car is running completely stock ignition and will get spark if I plug in the stock ECU. Tooth log looks good so it seems like CPS signal is making it to the ECU. Car ran great as a DD prior to disassembly.
One interesting thing is the car would run on a stock NA basemap (poorly, I never worked on the tune) a few weeks ago before any of the turbo stuff was on it. So I don't know what's changed in the meantime. It will not produce spark on that NA basemap now.
The only changes from stock are-
42lb injectors
No ICV
No AFM
GM IAT sensor
Lc-2
Is there a chance that the coil/cap/rotor are just far enough out of spec that the MS can't drive the ignition system but the stock 153 ecu still can? I don't like the "throw parts at it" method of troubleshooting things like this. Is there anything within the tune that would prevent spark? I may try the test mode to see if I can force the coil to fire- but I'm a little wary of cooking something doing this.
I'm close to reinstalling stock injectors, ICV, AFM, ECU just for my own sanity to isolate this as an ECU issue and not something on the car side. But I'd sure rather not... I'm hoping this is something stupid and I'm not afraid of feeling dumb for a little while...
What am I missing?
My turbo iX is so close to running! But I'm baffled. The MS refuses to produce spark. It's an ms2 based unit that was built by someone else and then set up by SSSquid for my specific car- he just replaced the failing ignition driver and some other things and we were fairly certain that would solve the no spark issue. He's been extraordinarily helpful and has spent probably way too much time working on this ECU for me. I imagine he's starting to be as stumped as I am.
The car is running completely stock ignition and will get spark if I plug in the stock ECU. Tooth log looks good so it seems like CPS signal is making it to the ECU. Car ran great as a DD prior to disassembly.
One interesting thing is the car would run on a stock NA basemap (poorly, I never worked on the tune) a few weeks ago before any of the turbo stuff was on it. So I don't know what's changed in the meantime. It will not produce spark on that NA basemap now.
The only changes from stock are-
42lb injectors
No ICV
No AFM
GM IAT sensor
Lc-2
Is there a chance that the coil/cap/rotor are just far enough out of spec that the MS can't drive the ignition system but the stock 153 ecu still can? I don't like the "throw parts at it" method of troubleshooting things like this. Is there anything within the tune that would prevent spark? I may try the test mode to see if I can force the coil to fire- but I'm a little wary of cooking something doing this.
I'm close to reinstalling stock injectors, ICV, AFM, ECU just for my own sanity to isolate this as an ECU issue and not something on the car side. But I'd sure rather not... I'm hoping this is something stupid and I'm not afraid of feeling dumb for a little while...
What am I missing?
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