Quote Originally Posted by CDeeZ View Post
Not trying to argue Mark, just trying to understand.

Wouldn't you want to smooth the final table over a little bit after making BLM adjustments, since the ECM uses surrounding cells in making VE calculations
In theory you could smooth the last table in the above post, record data and adjust, smooth, data, adjust, rinse and repeat... but the last table shown is well within boundaries of a good tune for that engine.

Reading several tuning books including all of Greg Banish books, when a tune comes together and data or wide band is inline all engines will show a torque hump. I actually found this before studying and tried to tune it out for a final tune without success, then noticed a pattern as I tuned more vehicles. This may not be the case in a race engine that has nothing but WOT high RPM HP. Hard to see it in the low resolution 7747 table/wire frame view but if you look you will see a hump where max engine torque is developing low RPM mid MAP, this is a demand for more fuel. As engine RPM increase demand goes down in wire frame graph and become smoother, but numbers are actually higher due to graph.

See the torque hump at 65 to 75 MAP, 1200 to 2000 RPM? This is typical of a close to stock TBI engine. Something like an LT1 would be bigger and higher do to engine demands and also look bigger do to table resolution having twice as many cells... more IIRC...

You also have to realize there are many cells in the picture or wireframe graph or your VE table that the engine will never hit! Take for instance 400 RPM 100 MAP and that area. Or 3200 RPM 20 MAP? Look at your BLM logs! Can you fill in all cells?