What is the ideal rpm range to let off the clutch at the launch? Also what is the ideal time to shift to 2nd and to 3rd? First time at the dragway I was in the mid-16's. I think I let off too high and shifted too high. I shifted at red-line both times. I would like to get down to a 15.9 before doing any more mods.

that is all setup specific, there is no way to tell you. you have to experiment for yourself and see which methods yeild the best results.

EDIT: Nice car btw

Evo 8 - 12.3@113 circa 2009 (~330whp)
Now with BB Xona Rotor HTZ FP Red and ~450whp
2018 MSM Civic SI Ktuner TSP stage 1 w/ Honda hacked headunit.

I will experiment, but I'd like to know what has worked for you guys.

I'm guessing some time before fuel/ignition cut.

Let's see, I used to launch my 99 at around 4500 on the stutterbox, and shift at 6800 with the soft limiter set at 7200 so I didn't have to lift. Then again, I had $19k into my car and was running around 23 pounds of boost for ~370 whp. Does that help any? Don't worry about shift points, worry about launching. A good 60' time OWNS fast shifting when it comes to ET.

Greg

'19 Genesis G70 3.3t AWD
'88 Chrysler Conquest TSI

You really have to just listen to the engine and feel how it is running, if the RPMs are going up but it feels like the power isn't it is probably time to shift.

AEM CAI, AFX Underdrive Pulley, Greddy Header, Tsudo N1 2.5 stainless catback, Homemade groundwire kit
17" Fondmetal 6500, Tokico Illuminas, Eibach Pro Kit Springs, Front Upper Strut Bar, Baer Track System, Drum to Disc, RMDSM Anti-sway bars front and rear.