How to Megasquirt your 3G Hemi

Update:

1-
Had my battery fall over and short to the body. Couldn't get th car started. Sent to DIYautotune, who said it was fine. Got it back, re-wrapped the crank sensor wiring, and things were good again. The 5v VREF feed was grounding to my crank sensor ground- fixed.

2-
Had DIYautotune install the knock module while they had the box. Haven't wired it yet. Will update when I do.

3-
Couldn't get the car to rev over 5,000-5,300 rpm. I tried everything I could, and it turns out all I had to do was de-activate the crank sensor filtering in tunerstudio. I didn't even know there was crank sensor filtering. I adjusted the crank and cam pots in the board prior to that- lowered the voltage required as much as possible.

4-
Had a lean condition above 5,000 rpm. Calculated the percentage I needed to change the AFR to get where I wanted to be, and added that percentage to the appropriate cells in the VE table. Still needs more fine tuning, but I'm in a safe AFR range up to 6,000.

5-
I'm considering running two separate VE tables, with the switching threshold set to a certain TPS trigger. I say that because I get similar MAP readings at similar RPM's when cruising vs heavy throttle. I was super lean down low at heavy throttle when I started tuning yesterday, added fuel to get it acceptable, but then I ended up at like 10:1 AFR when cruising. I'll update the thread when I settle on a plan.

I still haven't been over 6,000 rpm. I was at 77% duty cycle at 5800 rpm and 13:1 AFR on 44 lb/hr injectors. The math puts that over 500 hp crank at .50 BSFC. I know that's a crude calculation, but it tells me I'm headed in the right direction.