I will start by saying I have read every thread on cold start issues and tried everything I can think of with no luck......
I have had a cold start issue every since I completed my current build. I have ignored it for a long time but decided to tackle it recently and just cant seem to find a solution.
On first start in the morning the car starts up perfectly. It will idle fine as long as I don't touch the gas or put it in drive or reverse. If I blip the throttle, it will rev up fine, but when the rpms come down, they just continue falling and the engine dies. If I put it in drive, it also dies. I can prevent this by pumping the throttle gently. After about 2 minutes...... everything is fine and it runs perfectly.
Other than this issue, everything is perfect. Trims, afr, idle, driveability........everything is fine.
I have tried everything recommended in other threads. Base running airflow, cranking fuel, idle timing, etc, etc. Nothing seems to help.
Any ideas appreciated..... I would like to solve this once and for all.
Attached is the tune I have been using for a while. I have tried changing all the things mentioned with no luck so for now I am back to running this one.