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Message: [QUOTE="B585Ford, post: 544755, member: 5497"] Since I messed with Vane tables for a different reason and I have tried a number of configurations for the exh brake, here is my estimate as to how it works. Desired back pressure is what the truck shoots for (it is table computer gives priority to), but if it is unable to reach the desired back pressure then it will follow the vane tables. My assumption is max is just that whereas the other vane tables is where it wants them to be at under "normal" conditions (I still haven't confirmed that yet). The reason I think Desired Back Pressure is the main table the computer tries to follow is that on my first attempt at making the exh brake, I ONLY adjusted the vane tables with NO changes to Desired Back Pressure. That didn't do anything at all. Then I tried to adjusting Back Pressure tables and it worked, but I couldn't usually get my Back Pressure to the desired number (I couldn't get EBP to 50). Then I tried adjusting vanes in conjunction with a Desired Exh Back Pressure and seem to be able to get the Back Pressures higher. It would be nice to have a DD for monitoring so I could see what the duty cycle is. That would help a lot in confirming what I think is happening. Finally, of course, for my programs it is really hopefully I have a hand shaker so I can get the truck at what RPM I want it at to kick in the brake or not use it depending on if I need it. [/QUOTE]

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