2007 C6 Z06 Twin Turbo, big cam. the high torque aftermarket starter, and battery have no issues, they can crank the car without problems when its hot, there's no slow crank or anything like that. If i pedal it a few times, eventually it will fire and then has no issues. Hence the car can crank without issue, and once it sees the gas and air mix it wants it fires right up.
I have noticed that maf is lowest in the warm starts log, and iat is highest. the turbos have a direct filter attached and they are in the engine bay. I have tried lowering cranking spark, lowering cranking fa, and raising the startup airflow, and there seems to be no changes with any of these adjustments.
my afr commanded is 1.25 during warm crank, around 1 during semi warm and .25 during cold crank, im thinking not enough gas being commanded?
I have 3 recordings, cold, almost warm, and completely warmed up. the car only long cranks in completely warmed up. I am open to suggestions and advice, thank you in advance for any help with this.
latest (2).hpt
long cranking when fully warmed up driving for 20 minutes.hpl
cold start no issues immediate fire.hpl
semi warmed up started just fine.hpl