Have a ls1, just fitted a 233, 238 cam shaft and are now having trouble starting, it fires but doesn't continue to run. Been in and adjusted the startup airflow initial, cranking fuel tables but still no luck, and help would be greatly appreciated
you need more timing for, somwhere in the 26 degree range. I have a 239/244 cam installed and it liked 30 degrees.
From 400-1400 rpm and 0.08-0.28 make it all 26 degrees and feel the car, you might need to add some more. Raise idle rpm to 1000. Add 2 degrees to cranking/start.
play with idle under speed and over speed so that it has around 5~7 degrees of play.
Disable AC Bumb TQ Spark until you run the vehicle.
Disable LTFT and run in open loop
Add 10% to all FA multi stage 1 and 2 (the tables look weird)
Reduce about 5% on VE table from 400-1200rpm 15kpa to 75kpa
increase idle airflow by 10%.
zero out throttle cracker from 400-1600 rpm at 0 mph.
This will help you alot. If you keep getting problems ill send you my tune to get an idea of the values you might need.
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