its the way scott tuned it. i have 550cc primary injectors and 1680cc secondaries. so what he did was remove fuel and spark at around 3500 then have the secondaries kick on around the same times. so thats why you see a lean spike then a rich spike as well in the afrs. now this only happens if say im above 3500 and above 3 psi. so if im just cruising and not boosting i dont see this happen.