Methanol injection?

I was wondering if I purchased a methanol injection kit if I would need to have the 90 Sc dyno tuned or if it will provide more fuel etc on its own? Dont know much about this stuff.

You don't NEED a tune but it would help make more HP. If you don't get a tune and put it before the IAT sensor the computer can compensate for the cooler air charge. And it will also help keep the knock sensor from triggering so you don't lose power.