The preload adjustment basically tightens/loosens the nylon bushing in the rack. That is the only thing that would "wear out".
The cap puts more load on the little spring and that spring pushes on the nylon bushing
Looks like this:
If you account for ambient pressure, those pressures that @MacAllan30 posted are within spec except for WOT which is about 10psi higher but nothing to really worry about.
He is in DFW so approx 600ft = 14.4 psi
35 at idle - 14.4 = 20.6
50-70 part throttle - 14.4 = 35.6-55.6
90 at WOT - 14.4 = 75.6
Yea, would be nice to log current diff behavior and then log again after changing this.
I'm less interested as I don't have an issue with how the diff currently operates, so someone else would have to do that.
yea I saw this too. It's perplexing because CANchecked is on the CAN network, not OBD2, so it shouldn't interfere at all. However, JB4 does spoof boost to the DME so maybe that is what was happening in this instance. The CAN boost ID would be showing what the DME thinks it's seeing, which would...
Don't speak so loud, it might hear you!
Boomer Blob right now:
"See, if you go by the manual, you would not do that, and uh, yea, have I told you about my Miata?"