This isn't just another ordinary tachometer with basic rev functions. It's much more advanced. GTech has found a nice niche to apply all of its latest technology into something we can put to good use in our street machines, and it's called the GTech Pro Expandable Gauge System (EGS).
No doubt, there's a surplus of options at your fingertips to keep an eye on engine stats. But what if you could get most of what you needed in one easy-to-read display? The GTech Pro EGS allows you to keep an eye on basic engine parameters such as battery voltage and of course rpm, but also provides you with plenty of cool added features to play with. Things like 0-60 and quarter-mile times, a skidpad g-meter, wideband air/fuel ratio monitoring, and even the ability to datalog days at the track with an easy recall function at the push of a button.
The GTech Pro EGS can be as elaborate or simple as you like and gives you an incredible number of options, many of which have never been available until now. This could be the last tachometer you ever buy. And since it's expandable, it means you can keep adding functions, including an eight-channel input module for driveshaft speeds, differential temperature, oil pressure, exhaust gas temperatures, and any other sensor you can think of. Should you need a 24-channel input upgrade, then GTech also offers a 2MB module upgrade. For '96 and newer vehicles, you have the option of an OBD-II interface module, which allows you to monitor a wide range of parameters such as speed, throttle position, fuel pressure, short- and long-term fuel trim, and everything else computer-related. There's also the wideband oxygen sensor to keep tabs on the air/fuel mixture and, lastly, an accelerometer module. If you're not looking to invest in the entire system just yet, then we do recommend at minimum the optional sequential shift light. These shift lights are fully programmable, starting the lighting sequence 500 rpm before the preset redline. Best of all, it can also be used as an adaptive alarm for any number of parameters.
All said, this is a great system that's completely digital with endless possibilities. The install wasn't difficult, requiring a few hours at best with basic handtools and a little wiring know-how. If you're looking for an affordable do-it-all system that can datalog while offering a multitude of functions that GTech is known for, then this is the system for you.
Quick Notes
What We Did
Added GTech's newest technological bad-boy to our Nova
Bottom Line
Finally something for the big kids to play with
Cost (Approx)
Starting at $340
 |  To kick things off, we applied...  To kick things off, we applied some antiseize to the wideband sensor to prepare it for its home in the bung we had previously welded on... |  ...We positioned the bung...  ...We positioned the bung just after the collector in the exhaust pipe on the driver's side, which would give us plenty of room to run the wires. |
 For demonstration, we went...  For demonstration, we went ahead and plugged in the wideband sensor to the EGS controller underneath the car... |  ...We decided to keep the...  ...We decided to keep the wire looms away from as much debris and water as possible, so routing the wires and connections through the front subframe was our best option. |  We then placed the loom through...  We then placed the loom through a rubber grommet in the firewall and fed the wires into the cabin. |