The Problem here is, everybody is looking at peak numbers, and hell even the normal forum members are worried about how they stack up in a drag race. The Serval has port timings that serve as a motor you ride for MORE lower end and midrange hp. I look at those dyno runs for overall curve, torque backup, and ease of using the powerband when I am riding a sand trail, negotiating whoops, corners, and tree shots.
If you search back to every post on here were I make a recommendation for carb setup, the only time 28mm carbs is recommended is when someone is asking about how to setup a low-mid motor with a smaller bore. I have recommended Single carbs as well, and still stand behind that for certain applications. I have also recommended twin setups on 30mm, 32mm, 33mm, 35mm, and 38mm setups. As well as larger singles in 35mm, and 38mm. So I completely call bullshit on that accusation. If Shane would have wanted more top end and less acceleration speed from his Serval (which he didn't), we would have went with a 30-32mm carb. We may have been able to put Lectrons on it and maintain most of the bottom end, but the cost investment to do that would have almost cost as much as his serval cylinders did.
Wih the pro circuits being the right pipe choice for low-mid, it comes from riding bikes with different motor combination with all sorts of different pipes. Then dyno testing setups with different pipes as well. I dont know how many of you realize this, but I used to ride with a fleet of banshees. Between my family, and my friends there are 13 banshees, 14 if you count the one I owned (that was the third banshee I have owned). There is only one with un-ported cylinders on it. None of them run stock pipes. Every single one of the bikes is built for low-mid hp and torque. A couple of them are chopped cubs that dyno'ed at 96hp on a loaded crank dyno with a water brake.
If you want to drag race, stay away from pro circuits. If you want to get a dune port, and recreational ride and drag race your buddies, stay away from the pro circuits. If you want that MX port, or trail port, and you want an ass ripping grunting low end to midrange machine with the 2 stroke top end we love, look at getting pro circuits.
I had skeptics even in my camp when we went into dyno this bike, and everyone there who saw what started to transpire, knows what I thought held truth. The laws of two stroke theory completely applied to what we found.
We ran every run identical with the fan, temperatures, etc...... Oh, and the bike was re-jetted for each pipe setup we ran as well.
Not all the dyno charts out there are on this site. Nate McCoy has charts from shearers, cpi's, t5's, etc...... as well. His RPM numbers lined up with ours. The guy who ran the dyno on our runs had no stake in this motor, he did not build it, he didn't even know about the serval when we took it there. Everything he usually dyno tests is drag bikes (banshees and Raptors).