Quote:
Originally Posted by RustyLugNut
But, I will manipulate intake air temperature, ignition timing and air/fuel ratio along with the attending electromechanical controls to do so.
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This alone invalidates a simple A-B-A test.
You need to have full instrumentation showing EGT as well as NOx and HC emissions, to show that any improvements are not simply due to changes to the car's electronics.
Therefore, you need several sets of data: stock, stock system optimized by adjusting IAT, ignition timing and AFR, system on with changes, system on with further electronic changes and second electronics changes only.
Because, as being discussed in another thread, optimizing the electronics can and does result in fuel savings over the typically rough and "safe" stock settings of the car.