If you fly a G1 or G2 Cirrus you might have considered upgrading the OEM mechanical fuel quantity gauge with the Aerospace Logic FL202G digital “smart gauge” control head, along with the CiES digital magnetoresistive fuel senders. That’s just what we did back in 2014 for an Aviation Consumer field report.
But as we described in the November 2014 issue of the magazine, the upgrade in our 2002 SR22 G1 testbed yielded disappointing results—so much so that we ultimately removed the digital setup and had the OEM system reinstalled. The installation cost $5200 (CiES ultimately refunded the investment) and the plane was down for approximately one week. CiES stopped shipping the kit for G1/G2 models while it worked on a fix. Apparently persistence pays off because CiES says it found the problem and has a fix.