Being the injection is a self learning..it will take more than a couple of minutes...plus on my injection.. it doesnt start to learn until its above 160*... what water temp were they running.. if it was 160* or below(like some dynos like to run for the big numbers) it would never learn... plus the injection will try to drive it to stoichiometric vs a richer point for power..unless you change the program on the upper end