Stop in for a cup of coffee

Ah, that reminds of me the 'water injection' spray 'trick' which apparently goes back at least to WW2 airplanes. Obviously not used for part throttle!

When I was using the tach drive distributor, I set up a little switch on a remote vacuum pod to add advance under cruise conditions using the MSD timing control box. Kindof worked but was a real rig job. Pretty sure I used on it on one drive to Norfolk and Pensacola..