237 242 is a texas speed cam ? Thats 286 deg advertised duration. Half that is 143 degrees. Take that from 110 intake centreline. The inlet opens at minus 33 degrees btdc overlap . Add 360 to get it back to tdc fire so thats 393 degrees btdc compression for ending the injection. Then add another ten degrees on so it hits the back of the valve and atomizes before the valve opens. Thats 393 plus 10. 403 degrees is optimal. So 400 is close enough . Yes vve will be out a bit. Will drive like a stocker with no surging in open loop with fueling timing and most importantly airflow tables correct.