would a unichip from an rx liberty 2.5 can be used in 3.5 magna?

I would not think so, I believe there are a couple of Unichip model. To do with weather the car it’s going on uses MAP or MAS.

well how bout a greddy emanage from a honda prelude. will it go with magna 3.5

G-Reddy would work, its just the software needs to be retuned.

and greddy will void warranty would'nt it