Chasing my tail on startup woes
 

Hey guys! I need help finding my way out of this paper bag.

I finally got around to re-installing my megasquirt when I put on my turbo. I'm currently struggling with start up and starter kickback.
99 motor using it's cam and crank sensor, 550cc injectors, FM turbo kit, 91 igniter & coils.

I had it running for a bit, but I think that I buggered something up in my pursuit to fine tune and I am now back to a non-running state. So far, I have verfied mechanical timing, ran a new ground from MS to engine, ran an independent wire outside of the harness for the crank sensor (I thought that I was getting too much noise), installed a new starter & cam sensor. What am I missing here? I have been unable to get it to crank long enough to check engine timing before getting kickback on the starter.

I used the 99 base map from DIYautotune, followed Brain's website on build, and modified the basemap for my 91 igniters. Can anyone provide me with some direction? Thanks in advance!

Decrease your cranking advance.

edit: as bad as it sounds try 5-10 degrees. You can go negative.

I appreciate the suggestion. Tried it from -10* to +10* and no change.

I now suspect that I either have a hardware fault with the MS or a blown igniter (but I get spark from both coils in the test mode). Voltage (on Tunerstudio) fluctuates wildly between 15-19 with the IAC plugged in and a flat 7v with it unplugged. Also, MS shuts down or loses connection with my PC while cranking with the IAC unplugged. Composite logs seem to suggest a hardware fault, also. To insure that I wasn't barking up the wrong tree, I re-installed my CAS, reconfigured MS for 4g63, and still receive mostly non-sensical data from composite logs.

Any other suggestions are very welcome.