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Message: [QUOTE="jdgleason, post: 459643, member: 166"] There is NO hating in this thread. None. There is frustration, and lots of it. You don't have any data showing improvement or loss from only the manifolds. You keep offering dyno graphs that tell no one anything about steed speed manifolds. Your dyno graphs display beautifully that your combination of parts added up to some extra power, but who knows which parts did what. Maybe those batmowheels lost 5 horsepower and the steeds added 40.... Sure the truck makes more power than it used to, but which parts helped in that? If we get into guessing, I'll look back at the thread where Aaron did back to back dyno comparisons with batmowheels. Do the math, average the runs, the batmowheel added 37 horsepower. Real data. [url]http://powerstrokearmy.com/forums/showthread.php?t=9031&page=4[/url] Now, looking at your dyno graph here, you added 2 batmowheels, (Not just the atmosphere like Aaron), EGR delete, intake elbow, steed speeds, etc. Your test truck picked up 42.12 horsepower as a peak. Unfortunately we have no average here. Because I have no idea how much power each added, I can only guess. Either way, with the addition of the extra parts it surely seems as though the manifolds did nothing for the truck. However, no one can logically prove or disprove this because there is nothing showing which part made power. So, I'm pretty confused and a little annoyed that you think that there are "Haters" here when the problem is your inability to provide specific data to the product we are discussing. Post your graph in the aftermarket section and title it "Hey! This truck runs great with the parts we put on it!". That's respectable, that's cool. Everyone will ooooh and ahhhh over it. The problem is that you brought a graph here that doesn't compare steed speeds to another manifold. That's what the entire goal of this thread is. So, respectfully, with no hating, the dyno graph you provided is NOT valid, sir. Have a great day, and congratulations on having a strong running 6.4. JD [/QUOTE]