As the title states, I have soldered up my boomslang harness, and when I plug in the stock ecu, the car runs fine and the dashboard reads rpm. However, when I plug in the Megasquirt, no tach signal on the dash or the Megasquirt. I had problems with my tach signal last time I tried using the megasquirt also. Doesn't the coilpack directly drive the stock tach?

... duh ok so i just realized that I need spark output for the coil to drive the tach on the dashboard.

Ok so here is my checklist of things to look for

1) re-check my wiring
2) re-check my board mods
3) re-check software settings

What else?

What I have done so far is listed on my other megasquirt thread in the first post https://www.miataturbo.net/forums/showthread.php?t=5032

 

sounds like you already know what to do. but i thought you got it running before?

 

nah i had the same issues before, just this time i can switch back to the stock ecu easily

 

yeah, but you got the CAS/tach signal working well enought to run right?

 

ya, but then it would randomly cut out or read rediculously high rpm and lock the injectors. One day it just stopped working altogether and i dunno why, but i thought it was my other harness which was kinda messed up.

 

Meh, im gonna buy a diy board and solder it all up myself. I think my board is fuxord. Upon closer inspection, some of the leads (where the resistors, diodes ... are soldered to) are not there and I believe this is why I have had so many troubles.

Note to self (everyone), buy your board from diyautotune and not from an ebay seller. I probably saved 20 bucks,