this value is the angle that the inside wheel reaches on the setup station. I make sure to adjust the left and right steering links evenly so they are always the same length, then make sure the toe is even on each side by adjusting the steering link that connects the servo to the rack. From there I check that each wheel reaches the same value on the inside wheel when steering left and right. If they are uneven, I will adjust with the EPA in the transmitter. Ideally the EPAwould never differ by more than 15%. I do this with my dual rate set to around 90% so I can increase or decrease by a few percent while on the stand; knowing that this adjustment will not be entirely even, but could help me determine if more or less throw is required when I check/set all of this for the next run.

hope this helps!