interesting observation togo. I think there may be a chance you are right. I wouldnt be all that surprised if the stock engine is choking up when flowing that much air volume. Better flow up top probably means usable power. I dont know how modded the car in John's graph is, but I venture to say not too modded because of the amount of power its making on a dynojet. Intakes or exhaust maybe. The nice smooth AFR is also a sign that power came from fuel tuning, so it might even be a stockish car with a tune. Either way, point is that lack of flow mods may have been the culprit of that dip there at the end. From what I heard, our heads flow well enough to make power up to 8k....
Want to shed some light on the specs of the car John?
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