Drag Strip tips and advice needed.

I took my 73 scamp to the drag strip a few weeks ago. It has a 512 RB with Super sniper EFI. I mistakenly did not have the Closed loop and learning on at all before I took it there and during the races and my times were underwhelming. 13.4 at 104 best. I subsequently had a tune done remotely by Richard Nedbal and have driven the car a bit since. I have a 727 with TF2 kit and Quicksilver shifter, no line lock hooked up or transbrake. Rearend is 8 3/4 with 3.91 gears. Mickey thompson Street ss radials. 3000 rpm stall TC.
Expand ^^^^^^