I am experimenting with a TPIS 102mm throttle body on a 2008 turbocharged LS7 with the 2 BAR OS. At startup, I cannot get enough airflow to get the car started. Using my foot to modulate the throttle, I can get the car to run, but if I remove my foot, the car dies.
If I increase the Effective Area Min value up from zero, will this allow more throttle opening at startup? At the PCMs commanded start and idle positions, the throttle blade to bore clearance is tighter than stock, limiting airflow.
I have experimented with both small incremental changes and large value adds to both startup and minimum idle airflow with no success in getting the car to start and run without assistance from my right foot. It is reminding me of the pre-ETC days when a hole in the TB would fix the problem.
If I change the ETC Scalar and put the stock throttle body on, the problem immediately goes away.
Just looking for a sanity check.
ID2000s are used on this car, car runs on E85 and does not have the actual timing tables in this shared tune.