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.

During the first 3 times down the track, the tires did not slip at all. I did not burnout as it was my first time drag racing. I also did not manually shift the car but let the transmission do the shifting. I did rev to about 2000-2500 before releasing the brake on launch. My best 60 ft was 1.97 or so.

What tips, techniques or advice should I do for the next test and tune coming up tomorrow?
Youtube has many videos on how to launch but launching a 300 hp car is different that 500 and tires make a difference. Knowing my setup, specific advice for me would be appreciated.

What compression ratio does the 512 have? Any idea what the car weighs? Your convertor is a little tighter than if you if had a all out race car, but shouldn't be the main issue. I'm going to suspect something with fuel line/delivery or setup. Could be a partially clogged filter, not enough pressure, etc. I have no experience with EFI, but your combo should be running well into the 11's I'd think.