I'm going for the Supechip next month myself. Even though my car is not in driveable condition right now due to the fact that I lost an arguement with a deer. Anyway, Diablo or Superchip both give good gains. But I've actually seen the Superchip, at my local raceway, on an SVT and I was impressed by the perfomance. As for the Diablo, I've heard of great gains but I've never seen what times it can yield. It's all in how you look at it.
