[twobjshelbys]

Update: While I was looking around to get some more info for vector1, I found that there are two altitude compensation tables in CalMap, one in the Ignition and one in the Fuel. The ignition one (which adds or removes advance) is indeed null (0). But the Fuel one is populated. It is a multiplier, and most of the terms are >1.0, especially in the range where I am at. It would seem to me that they should be <1.0 at altitude - that is, less air => less fuel to maintain a constant AFR. Do I have this wrong?

I may have some failing memory cells but I have a vague memory that this table might in fact be "inverted" in that it was treated as a "divide by" instead of a "multiply by" so that the numbers should all be calculated as 1/x... Might be worth a try...

I'm going to load some of the sample tunes from Accel into the ECU to see what they look like.