I emailed autometers tech support with some questions. They emailed me back a day later, I was impressed. I've heard nothing but good comments from other people about autometer.
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84 Camaro 305 ported & milled heads, 3 angle valve job, Edelbrock Performer RPM intake, Hedman full length headers, Flowmaster 3inch exhaust system, Accell ignition, Crane 274H cam, B&M 700R-4, 3000 stall speed, 4.10 gear,
M/T ET street tires
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http://www.geocities.com/jbenge/page1.html