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Message: [QUOTE="madman1234509, post: 1196955, member: 3910"] You're probably right. And I'm not sure where cylinder pressure comes into play with all of it, how how the combined boost/back pressure effect it and which one effects it more. When I started with the gates all the way closed, I'd peg my 100lb back pressure gauge and make about 60-65ish lbs of boost. Now I make about 70-75 and 85lbs of back pressure. I haven't messed with it much since then, and right now it's making that running off of 2 springs and no air. But regardless, I would see high back pressure, and also high boost at certain times depending on how we had the gates set. I did one run with them set to open almost immediately and right away saw 50lbs out of the low pressure alone, not sure what total boost was. [/QUOTE]

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