not a 100% sure . but about 4000 maybe.... with a real slow let off.

 

your MPH is great....i have made over a hundred runs a year (in a car) both in manual and automatic cars, from low 12s to mid 17s...so ive been around a bit. 121mph is very good, but 12.43 should be more like 108mph...your only issue seems to be off the line. my car pulls a 1.68-1.71 60', and i run 12.60s @ 104-106.5...once you get that 60' time down, your ET will drop by a ton...

 

Yeah your 60ft time is horrible. When you go just rev that **** to about 11k and slip the **** out of the clutch and lean forward on it. Just take your time and dont worry about the reaction time it doesnt matter unless your in competition.