I would love to have a portable 4-gas exhaust analyzer like I did at one of my school shops. With a 110-volt inverter onboard we could monitor exhaust gases while on a test drive, and it was quite enlightening what a relatively minor change in vacuum did for Exhaust gas oxygen concentration and unburned hydrocarbons.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!