My evo has full bolt ons, pump, and custom tune for 21psi. I haven't done anything else to the car in over a year. So now I wanna use a 75 shot nitrious. Do I have to get a retune? Or would it be ok to run the 75 shot with my current setup?

*spelled nitrous wrong in the title. oops.

 

Anybody?

wrong part of the forum? Should I put this in evo general to get more response?