Paxton Supercharger!

You can turn the meth injection on earlier than 7 psi. The more compression you have the earlier your gunna want to turn it on. For example, A 10:1 motor is gunna need the meth sooner than a 7:1 motor. Your engine will run cooler too since this system not only cools the intake air temps, it will keep your cylinders a lot cooler. Keeping the cylinders cooler will also help you stay away from detonation and can aid in keeping the engines water temps manageable also. A well designed injection system has multiple benefits. Rodney at AIS recommended a 50/50 mix of meth and water for mine but he said on most systems spraying straight water will be sufficient. Any more than a 50/50 mix and the injected potion can ignite and become another source of fuel so keep that in mind when tuning.