It depends on the track conditions/tires. If you get there early and run it will be sticky. You will be able to launch at a higher RPM. If you run later in the day you will just have to try it out.
O and one more thing. If you are on street tires don't go through the water box. It doesn't help and they don't like it. If you already know this great.
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" Nitrous is like a hot chick with an STD, you wanna hit it, but you know what the consequences might be "