I agree with you that the crack pressure of the saver should be higher than the peak pressure the system sees during a run. And I agree that it is to relieve pressure on the pump when you lift. But I disagree on the part about it affecting the tuneup in any way at full throttle. I was making the point that since the saver orifice in the BV doesn't line up with the poppet at full throttle it can't affect the full throttle tuneup. Period. The crack pressure of the saver poppet at full throttle is irrelevant since it is a closed circuit. I was not suggesting that one should set the saver crack to less than the normal peak, just that it wouldn't matter if you did. As for number 2, the point I was making was that even if the saver poppet was open at full throttle, where the circuit is closed, the clearances around the BV wouldn't allow enough fuel to pass into the circuit to have any effect on the tuneup, thus supporting point number 1, that the poppet crack pressure is irrelevant at full throttle. Unless the fuel can find a path to the saver poppet other than the intended circuit, the saver is simply a non-issue at full throttle. That's my story and I'm stickin' to it!