Originally Posted by oeoeo327

The turbo ramp refers to turbo boost exclusively, the start/end RPM refers to timing boost exclusively. Turbo ramp timing is added in addition to the timing value you've set for timing boost. Both timing AND turbo are added to your motor timing, which can only be changed by adjusting the endbell. Using your scenario of 50 degrees of timing boost, if the turbo comes in after all 50 degrees of timing are added (i.e. a long turbo delay setting is used), then turbo ramp 3 would give you a total of 56 degrees of added timing 1/10th of a second after the turbo kicks in.