I really enjoy your products [because they are] simple and easy to use and affordable.
- Customer
Zach J. from Alaska
- Aircraft
Piper PA-16 Clipper
- EI Instrument
8am–4:30pm PST M–F
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VI-2µFA SureFly Interface
VI-2uFA
$48
VI-2µFA SureFly Interface with Wire Connector Package
VI-2uFA-WCP
$128
Two VI-2µFA SureFly Interface (for Twin Engines)
VI-2uFA-2
$96
Two VI-2µFA SureFly Interface (for Twin Engines) with Wire Connector Package
VI-2uFA-2-WCP
$180
Lead Time: Usually ships within 2–3 business days.


I really enjoy your products [because they are] simple and easy to use and affordable.
Installation went great. The Fuel Flow is dead on.
Love it!
The installation was straightforward and quite easy. Reliability and accuracy far exceed the original [aircraft’s] oil pressure/temperature systems. Also, the price was about a third of the cost to replace the gauge cluster.
Very affordable… great installation instructions. [I chose EI because of its] price point, certified primary.
Installed digital volt/amp gauge in PA 28-181. Great unit easy to install. Much better than original.
Easy installation, lightweight solution. It looks good and is easy to use. [I chose E.I. because] I needed to replace my old Hobbs meter. This provided more functionality, allowing me to remove my old digital timer, and EI programmed it to my current airframe time.
I have used your products in every airplane that I have owned over the years and have never had a problem. Thank You
Fantastic customer support!
I have worked with and installed a few of your competitors’ and your systems. EI instruments’ ease of use and installation make these systems my go-to choice and number one recommendation to customers.
Great product. So easy to read compared to the originals.
You folks do a great job. Keep up the good work.