Once I fixed all my mistakes, I'm very happy with it. I love to change engine combos. Different heads, cam intakes displacements.
I have NEVER had to change ANYTHING in the tune. I've used the same 47# injectors, same pro m 80 mass air meter. I even had them on a stock 302 with stock heads and cam.
I only changed the displacement in the tune and set base idle speed and made sure timing was 10 btdc.
Never going to get a tune again. The box tune is perfect for me and A LOT of other combinations.
So I think the system is swell.