In hopes to impart some of my past experience to your testing scenario...My drag racing experience goes back 20 years on numerous blown cars. Regarding 3 runs per mod...if you are talking about a NA, 17 second car not prone to wide variations in performance due to temperature, traction and driver, than 3 runs is adequate...On a fast car like this, there are too many variables effecting the outcome. With my SRT6, my last three runs, over a 2 hour period varied from 13.4 to 12.9, with the only variances being the weather and the driver.

Regarding a full 1/4, a truer image of HP vs Torque can be seen if using the rest of the track, that is where a less restrictive air intake will begin to be more noticable. Often times the hotrods testing at a 1/8 mile are merely testing the "launch" to see if the suspension will hook up or to practice their "trees" or to gauge the performance within that narrow parameter. Learning to launch your car and the ins and outs of the track are a good idea on the 1/8, it makes getting more practice in easier.

Although I advocate icing on the blower between runs, it will only skew your results for the purposes you are investigating now; the car will run faster with an iced blower. Also, I'd watch that the ice doesn't start draining under the car, leaving it in the bag helps. The track officials won't let you run if they see fluid dripping out at the line. Another thing to try is run the heat on high power with the windows open, closing windows just before you pull to the line. I shut the heat off when staging. Good luck