For anyone interested in the tach time, we have installed several E.I.I tachs in sr20’s and sr22’s. They are very nice gauges and are a replacement gauge for the primary tach installed. They do require a form 337 and field approval (which has not been a problem). It generally takes about 5 hours to install and the gauge runs $475.00. They do record flight time and Tach time. The tach does not start recording until engine RPM’s reach 1300. If anyone is interested please call me direct at 717-569-5346 or E-mail me email@example.com.