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Message: [QUOTE="sonic blue l, post: 1453838, member: 5185"] Just checking to see if my thinking is correct. If you want more boost increase the desired back pressure? Now with that said, high back pressure is restriction. So im just curious as when I compare the hd300 to the easy tune, the desired back pressure is lower on the easy vs the hd300 in multiple areas and in fact I don't see any area where the hd300 is higher. Anyway I have a 72 atmo and was debating about playing with the desired back pressure tables, so just looking for suggestions/ information on the topic of back pressure. Or even any changes that one would consider after adding a 72 atmo vs the stock one. Oh, I also have a colt cam, and ih maxxforce pistons (not cut, not coated), wondering if that would warrant changes to timing, etc. Thanks. [/QUOTE]

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