Not much to update on, I'm at about 5,200miles on the car. Recently I have been breaking in a new set of gears.

I grenaded the differential several weeks back and tore it down. I rebuilt the SureGrip and setup a new set of 3.73s [from 3.91] and reinstalled. This time I did go with a "LubeLocker" brand 3rd member gasket. It's $25...but reusable and no RTV! For those with 8-3/4s, you know what a pain cleaning the RTV can be.

As I've been putting around breaking the gears in, I have been working on knock/detonation control. The MegaSquirt has the functionality but does not come setup for knock control out of the box. You define the resonant frequency of the cylinder, different gain for each cylinder, the knock % threshold by RPM and finally the response. How much timing to pull and how to bring it back. It's kinda fun to mess with.