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Originally Posted by cody
That's a very simplified descripiton. You and I both know the ECU is given targets to hit for AFR's, timing, and boost. Fine tuning those targets is the difference between a tune that is constantly causing knock or a lean condition, and one that the engine responds magicly too...regardless of the environmental conditions.
Just let go of the hate.
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You missed my point. Ed wasn't "fine tuning" the car... he was "tuning" the car. You were implying that Ed spent a ton of extra time on the details. I'm telling you the details are handled by the ECU itself, if they weren't we couldn't push the cars to the levels they're pushed, as the margin of safety would be too slim as operating conditions change.
Spending an ass-load of time on a map getting it "just right" is a waste of time, because the conditions the motor's being tuned under won't ever exist in exactly the same manner ever again. Temperatures change, parts wear, humidity is different, and on and on. The ECU can already adapt to those changes. The goal of the tuner is to make a map that's good enough to allow the ECU to work well in all conditions. If you really go after the details, at some point you're actually going to be fighting the learning features of the ECU.