mark8driver

Ok, so Ive got a 1990 Miata with a 1.8. Im still using the coils from the 1.6, and Ive recently finished installing MSnS-29q2 with PCB 3.0. On first attemp, w/ Nate Sullies help I got the car to momentarily run on two cylinders, 1 and 4. I realized that 2 and 3 were not firing, i then discovered that i had wired the pinout on the PCB incorrectly. Once this was fixed, I tested for voltage coming from the coil output signal from the MS, and got a 5v reading from both coil outputs, where the signal meets the Mitsubishi ignition controller thingy. But now, there is not spark when i test a spark plug, and the car wont start like it did before. I moved the signal wires as seen here https://www.miataturbo.net/forums/at...5&d=1148236634
to the opposing side of the resistors, but still no spark, and still a 5v signal. My mod is set up like that photo, but with all 1k resistors. Please just call anytime 210-269-0404 Wade.

Aussie Driver

Maybe there is a problem with the ignitor, that has only surfaced since it was running on 2 cylinders??

Get one of your local 1.6 owners to come around for a beer and while they're drinking, swap their ignitor into your car and test to see if you get a spark then. If it works then you'll know the problem.

Al Hounos

So you can get spark with the stock ECU?

You can also try switching the LED resistors to 330s.

mark8driver

FIXED, i figured out that the spark output would not function correctly through the update MSnS_029q2 !?!?!?! So Nate loaded his 029I, which with a little tuning, resulted in success!!! Now i just need to learn Autotune....

Al Hounos

That's weird.

kingofl337

I was running 26 code with no problems.