RE: My S4 at the track..
What was your 1/4 time?
Launch looked good.
IMO, launching should be done at a certain RPM. If you want a consistant maximum launch, find out where the optimum RPM range is and instead of revving, bring it up to that just before launch. Revving erratically will give you results, just not consistant ones and you have no idea where the RPMs will be with your launch. It could be 2-3k RPM difference each time.
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