Result

 

My car would idle about 10 seconds and choke out. Not really long enough to log anything and no CEL. However when turning on the car in ignition On-engine off the CEL would illuminate which let me know the circuits were at least going through the fuses and relays.

Multimeter was my next step. Stepping on the accelerator didn't result in the throttle opening when it was idling poorly. DBW issues. Flashing from base tune to the Dyno tune showed it wasn't tuning related.

Compression was uniform and I tested the engine last Saturday so while it wasn't a test it sounded similar.
Oil was at the right level, but I didn't get oil pressure issues.

Funny enough not setting a CEL for this type of issue let me know if was an issue that wasn't monitored by sensors. I don't know why I thought DBW cars had fuel pressure sensors but we should install fuel pressure gauges at least.

So crank, start, and poor running without a cel. Test using starter fluid to rule out ignition quick. Then test for fuel volume.

I do hope this helps someone in the future.

 

Well done finding the culprit! There's no excuse for shoddy build/installation work. Nice that you ironed that out

 

Good job man troubleshooting that! Ya always good to check the "basics" at first.. fuel/spark. I guess it just happened to crap out after you got it? Bad luck but nice work fixing it. Things like this are why I'm an avid DIYer.

 

Thank you! Sadly it happens with each S2K I buy something breaks the first week...
There's been a few other questionable things I have found but ironing out problems is usually easy when I have the time.
I haven't had a Supercharged DBW car before so some of these little things are a bit different but it's still basic troubleshooting. Now I just need to datalog to make sure the tune isn't covering up for the previous subpar install.
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Oh yeah same here! I'm an avid DIYer and my S2000 has never seen the inside of a workshop as a result