I have a FMII 1.8L with a Hydra Nemesis (2.7) and am running into an odd issue for cold starts.

All my tuning experience is with Cobb ATR, so I'm looking for advice on where to attack the problem, not looking for a one sentence miracle fix (unless that's the case lol).

When I first start the car in the morning, lets say ambient is 75 degrees, it starts up, a little rough, goes to high idle (2k-ish rpm) and then after 4-5 seconds it lowers the idle and just dies. I then start it again and it runs no problem (a little lean at idle when cold is all).

This happens every morning, first start, fires up, runs, dies. 2nd start runs no problem. Is there a certain table that would be correlated to this first start and somehow resolve the issue on the second start? Has anyone ran into this issue before?



Thank you!
-Tyler

 

increase warm-up/post-start enrichment

 

That did the trick it seems, still working on an idle that leans out until the coolant is fully warmed up. Going to start with those fueling maps next. Thanks for the info

 

Also I think FM adjusted the manifold wetting coefficient from the default of 40 up towards 80-100