rags Posted May 27, 2019 Share Posted May 27, 2019 Hi Guy's, Man am I having trouble getting this thing to run using the new ECU. A little background, the car was running fine up until I decided to "upgrade" the ECU lol It has been running for over 10 years using an Electromotive TEC II. Switching to a MS3 Pro. I'm using all of the same sensors that I used on the TEC. coils are DIY's 3 pack running in wasted spark mode. First attempt, it started but didn't run very long and was pig rich. I looked at my old TEC tune and noticed the required fuel was a lot higher on the MS3 so I dropped it a bit. Same situation, started, but didn't run for long, maybe 4-5 seconds. So now I start troubleshooting from scratch and find the first coil in the pack isn't firing so basically I'm running on 4 cylinders. Gotta be it! Not quite. To make this part of the story a little shorter, the Quad Spark that I received was defective. It had the output going to that pack grounded so if the Quad Spark was mounted, no spark to 1 and 6. Now I have a new QuadSpark but she still won't run. Spit and sputter but that is it. Since I am using a trigger wheel that I mounted to the balancer for the TEC, I'm starting to question myself on where I have the pickup mounted. I'm sure the pickup was mounted at the 11th tooth after the space would put it at 66 degrees but..... Did everyone else have this much trouble getting their MS3 to run? Joe Quote Link to comment Share on other sites More sharing options...
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