ORIGINAL: FredTT

Avoid granny shifting and make sure to double clutch as if you were shifting a non-synchro transmission out of a semi from 1954. Double clutching is used by speed-racers when downshifting; foot off the gas, mash clutch, put tranny in neutral, let off clutch, mash clutch, blip the gas, put tranny one gear lower than before, punch the NOS button and mash the accelerator. Sounds easy, doesn't it? Remember, if you do it right the transmission will make cool grinding sounds. Grinding adds power through weight reduction; the less material on the gear or synchro, the faster it spins!

Ok, so ignore that....

What about downshifting or power shifting while driving?

Think about it, when you downshift normally when your driving, what happens? An insane amount of torque as you move into the Powerband. Now add an extra instantaneous 100 torque and 100 hp to that downshift, what happens? Your going to break traction and fly into a pole. Nitrous is made to be used as you increase RPMs. This stops you from going crazy. But if you engage nitrous, and from crusing in 5th you pop it into 3rd, you are asking for trouble.

Powershifting is a big NO NO with nitrous. If you do not left off the gas, the the engine RPMs will spike to fuel cut off. If your running a dry kit, your engine will the full of N20 and no fuel, which will cause a grossly lean situation. If your runnign a wet kit, its not as bad because your still supplying fuel with the nitrous. However, the engine is not getting enough ans as you reach your approch the max RPM, the PCM can't stop your engine RPM because nitrous will still be spraying. This can cause spun bearings, thrown rods, etc.

What if I miss a gear?

Well then your screwed. Immediatly take your foot off the gas. Do not leave the car at WOT, if you do, you won't be able to stop your engine from over-revving and doing damage. When you finally get the gear, ease back onto WOT, don't quickly go there, or you will lose traction.