Summit has trick flow heads

the bug is them trying to achieve the flow #'s they have already published. I bet they drew these things up on a computer and took the data given and then created hypothetical flow #'s and now they have some metal in front of them that is missing the mark.

While that's a possibility, I'm more likely believe they have materiel supply/logistic issues...very rarely do advertised flow numbers meet observed numbers, and most of the aftermarket mfrs are OK with taking that hit, especially a company like TFS where they were making money for 3 decades before even introducing a Mopar product. What they care about more is getting the product in stock and sold, and if they don't have raw materials to make the product or tooling to machine/finish them, that affects the release date a lot more than advertised flow numbers. All they have to do is be close and toss in that little disclaimer with the (*) that actual numbers may vary based on differing input conditions.