thanks for the info, what car your friend driving? what feedback after install the MSD?u can install at GT auto.. a friend of mine install there... yes u need tuning but its not need 2 plug into the pc... there is some tuning at the side of the MSD DIS-4.. just turn it according of the spark u want... my advise bro.. get good wires and good connectors.. don get those cheap wires and connector... my friend have experience.. giving very high spark but use normal wire.. the wire snap itself and the car stall in the middle of the road