Im wondering about the meth kits, are they something that is constantly being run in your car, or is it kind of like nitrous(hit a button and then you go bye bye) how exacley does it work? Or does it engage only above a certain rpm that you have preset...can someone give me some feedback on this..i searched and coujld not find, for this is the ultimate newb question. Could someone be specific about how it works...thanks.

 

Generally the systems (majority) are progressive -- meaning they meth / alk / water spray comes on at a certain min. psi threshold (e.g. 16psi) and then scale for RPM and boost.

 

kits can be either boost activated switches (like typical nitrous) or a progressive controller...