tuning with LTFT is tough because you really can only rely on them after many miles, and with very specific filtering.

The amount of filters you need to run are fairly big... I start by filtering out all cells with a TPS that is not between 3% and 25%... anything outside of that range is typically going to be wrong. Filtering by RPM is also fairly important.

I always found myself going back to a stock maf table at times... those LTFT's can get fairly stupid.