I guess it all boils down to what you're trying to achieve. I've always taken the approach that it's best to achieve the desired results with the fewest changes. With respect to fuel flow, if the engine makes maximum power at 12.9:1 it does't care how that's achieved. The problem I see with making changes to the MAF table is that it's a relatively esoteric table for anyone other than a veteran tuner. If something goes wrong with a vehicle and someone else has to troubleshoot it, there's a good chance that changes to MAF table will be missed. That's obviously not an issue if you're tuning your own vehicle, but is a problem for a customer who goes down the road. The other potential issue is that if you change too many things, you wind up chasing your tail when a problem arises. My whole reason for responding to this thread isn't to tell people how to tune, but to hopefully save some guys from a head-bashing marathon in the event of a problem either during or after tuning.Originally Posted by jfpilla