The 6btm was perfect for my situation, it’s in a boat and fuel efficiency is not of primary concern. On a street car when you’re not in boost it’s nice to keep all the timing in it for cruising and get the mileage back. It’s hard to do that in a distributor and a mechanical type retard system. The only real way to get there is by creating a 3d map in software and letting the box do the work.