Quote:
Originally Posted by Victor Draken
It's not true, most with a tune will perform worse because tuner will not make it run leaner anymore as much as it happens with stock tune and new intake.
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I don't understand... leaner is leaner period. Does not matter if the tuner makes it leaner by taking fuel out of the fuel map or the intake throws off the afr.. if there is power to be gained on a particular car by going leaner it will make power either way (tuner or filter).
However, if the intake messes with the calculated load (and it certainly will if it changes the afr, in fact that is why the afr changes, because the flow around the sensor causes a deviation from stock maf scaling) then the tuner will need to take that into account because load affects all of the control systems, not just the fuel but also timing, avcs angle, etc.