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[GT40FIED]

All that just to miss my point entirely. Of course velocity is important...but by your logic, as I said, a totally unrestricted exhaust would be the best way to go. This isn't the case. Ok...say you still want to take advantage of scavenging...why not just run straight headers and no pipes? This works well on RACE cars but not on street cars since racecars could give a shit less about low end power. This taken from "How To Build And Modify Intake And Exhaust Systems":

In the past, many racers have gone to extremes in reducing exhaust back pressure. On the surface this might seem quite logical, but for street applications it is quite ineffective. While it is important to create exhaust gas velocity, for all intents and purposes in street applications it is important not to get carried away. While racers will benefit geatly from an extreme reduction in back pressure (such as dirt 1/4 mile track racers in the south in the sixties and seventies who let gases escape from the cylinder head directly), street cars will not benefit from such modifications. The best comprimise is a high flowing header of suitable length and diameter while not going overboard in an attempt to eliminate back pressure altogether.

I honestly think you've ignored most of what I said and are just one of those people who like to hear themselves talk. Go around and quote all of the exhaust manufacturers you want...most of what you posted doesn't really refute what I've been saying and you also have to take into account that they'll say anything because they make the assumption that dumbass wannabe "tuners" won't know the difference. This is the same reason they tell you that you'll get 20hp from a header swap. As for my professor...that's right...keep comparing people to Midas employees. Especially a guy who's spent his entire life around cars. The funny thing about it is that I'm sure that most Midas employees would dwarf you in their mechanical knowledge.