Alright this is my first post on a forum, I've managed to make it all the way to the point of attempting to start my car in megasquirt only with searching for answers so know I am here in my time of need. I built the ms3x with trubokitty.com instructions and tested everything with the jimstim all good. Got it in the car and was attempting to start it, had no luck, eventually I killed the battery after a multiple start attempts and changing settings in tunerstudio so I went for a jump start. After i plugged in the jump starter and tried to start I could no longer connect to the ms3x. The jumpstarter was the correct way although I suspect it still caused some damage because it was the only thing that changed. I'm just wondering what components would most likely be affected by a surge from the jumpstarter and what I need to test to move on with the project

 

There's a fuse, ST IGN, that has to be removed on some.

Are you using a GM IAT or did you use the MAF?

MS won't work if voltage drops below 10 during cranking.

 

I have the GM iat installed and I didn't remove that fuse, I also remember now it seemed to go offline when I tried the jumpstart but it also was near when I pulled the injector relay to check the timing which I think cuts the power to the ecu but even with that in place it still wouldn't connect. I'm gonna try a new battery with the jimstim and see if it will connect to the laptop

 

Alright so some more info, I was able to reload the firmware and tested it with portcheck and it finds 1 valid port, ts still says not connected. Ts will detect it when I create a new project but everytime I hit test it comes back as failed.

 

Which firmware version are you using? I remember I had to switch back and forth to find the right one that worked for me.

Which cable are you using?

 

I have been using 1.5 so I could def try like 1.4. The cable is a USB A to B amazon basics, It worked fine before yesterday so it's possible but I'm thinking it prob would be something else

 

The older 1.4.1 firmware worked it connected to ts finally thanks for the help!