Thought I’d introduce another tool Chip is using to tune the TR6.  It’s a software program that plots the Air/Fuel mixture ratio using a sensor mounted in the exhaust.  This little tool helps to see how close we are getting to complete combustion.  If anyone is wondering, we are currently a bit rich, so we can lean it out a bit.  Our formerly weak ignition (see the previous article discussing Distributor Phasing) needed more fuel, whereas the properly functioning ignition requires less.  We like efficiency.