Anyone out there have any information regarding what kind of mass airflow reading (in g/sec) you should be seeing at WOT? I know that it will be relative to RPM as logically as RPM's increase, so does the air demand of the engine, thus the g/sec being pulled through the MAF sensor should increase in unison. Also, while at WOT, with RPM's rising, is it abnormal to see small temporary dips in the reading? I'm currently chasing some upper RPM detonation while doing some tweaking of the tune with my Diablo Sport. I'm 99.9% sure it isn't a fueling issue. I know the only "true" way to measure WOT fueling is with a pre-cat wideband, but according to a lot of info and statements out there, on an NA vehicle the equivalence ratio that can be data logged is actually pretty close to the AFR. I'm a still just a tad on the rich side, so it's doesn't appear to be running out of fuel. I've been little by little pulling timing back in the upper RPM's, but that doesn't really seem to be having much impact. So far I'm up to pulling 5 degrees of timing. As I've been looking over all the data logs I'm accumulating, I think I may have spotted a trend that right when or just a split second before I'm picking up the detonation at WOT, I'm seeing a momentary dip in the g/sec the MAF is reporting. I'm wondering if that could potentially be the cause. Maybe just an old MAF that for the most part works, but just provides an erratic reading here and there. And yes, I've already cleaned the MAF (several times) so that isn't it. A new MAF isn't terribly expensive, but before I just blindly throw parts at it, I was curious if anyone had any knowledge or info specific to the MAF readings. Thanks!