Okay, I'm ready to ask for advice....

2.4l g4cs
SMIM/S90 with no isc/fiav

Car won't start now, and backfires thru exhaust like gun shot. It seemed a lot better today and almost started. Seems to be very rich cranking???

Learning about global deadtime and the direct access chart.....suspect???

Quick Story......

Car was working fine, I had it tuned for closed loop and running good. I was trying to get everything dialed in so its ready for WOT and dyno tuning etc.

Main jobs, swap oil pan to fix kink in turbo drain, add ISC to S90 throttle body so I don't have to rev it for 5 minutes on cold start to get it to idle.

(I'm not going to post the big list of things to go thru, because I had just did them all recently on my new build. (compression, leak down, timing etc)

The car was fine when I moved it to begin work 3 weeks ago

I did verify boost leaks, fuel pressure, spark.


NOTES:
I arced a wrench on the alternator, it blew the 60a abs fuse on the battery. Replaced that. Continuity from battery to alternator is good now. (ECU does the CEL and still connects to ECM)
I also wired in the cooling fan on a mishimoto shroud (just the main fan so far, not AC)
I added a chassis ground from firewall to battery because after low battery kit it wasn't long enough.
I put the isc on the bottom of the s90 (blocked off FIAV ports, no bypass plate) I have since removed it to try and diagnose no start. (Now just a block off plate, all idle deleted)
I replaced the oil pan, which meant removing downpipe, axle and transfer case (this is when i arced the alternator)
I started messing with MAF settings trying to get ISC to work, have since removed ISC and zerod all MAF settings. All other settings remain untouched in ECMLink. (My MAF slider settings were pretty gnarly before. like 50-60% on the 50hz i think)


Okay check out the log, it actually almost started this morning. I cleaned the spark plugs last night when checking spark and zerod all the MAF settings before trying.

Thanks guys, really tried to figure this one out myself -.-

Very rich post a log to show reverse what you did sounds like a number of things

I tried to put setting back approx where they were before I 0'd it all out. Unfortunately, I don't have a good log saved to reference.

I did notice at one point on this log, MAFRaw dropped to 0.0hz and the MAF was reading like 60hz. (7.327 seconds)

Also InjOn is like 2x that of a log I have before I got my car to idle. 10ms vs 5ms approx while cranking and 200-700rpm trying to fire

On the MAF COMP tab your base maf type is on "2g" when it should be on Speed Density..... you have bought a MAP and IAT and wired them in correctly, right? You didn't assign them in the ECU inputs tab.

There is 0 reasons why you should be running a MAF, that's whole point of V3 Link.

Also your speed density table on cranking is in the mid 60s which is too much, try the mid 40s in that area.

Hey I'm running a 2g maf. I plan on going to SD soon. That would have been my next move after swapping the oil pan etc. But for now I don't want to add more variables.

Keep in mind I had the car running great in closed loop before some minor changes like oil pan and adding isc.

One thing I forgot to mention. When I did hook up the isc...I had it in the wrong plug. I swapped the plug to the correct one.

That initial isc ended up testing bad. My ecu looks fine but maybe it got fried?

Edit: found a socketed/repaired ecu for $400 I'm going to pick that up as a spare/rule out the ecu

If anyone has other ideas that would cause injOn to be 2x longer than my other log when car was normal?

Welp good news and bad news
Trying a different ECU changed nothing

I ended up putting every I could back to stock.
Injectors, throttle body, intake mani, throttle cable. Fixed #4 injector plug i found bad.
Rebuilt TB shaft seals and used good ISC black sensor.
0'd all the settings on ECMLink and it fired right up

Had to adjust the 50hz MAF slider to keep it idling and then I was able to set the timing and BISS

Now I can slowly start putting things back 1 at a time.