For anyone that wanted to know just as much as I did, about an auxiliary speedometer / tachometer in one, I've found the perfect little thing for it. The new RSM from Apexi, this thing is very neat, it measures engine speed, vehicle speed, lap times, travel distance, battery voltage, a bunch of things, so I'll just copy and paste the whole summary on it from Apexi, along with some pictures.




"The new Rev/Speed Meter GP is a complete multi function measuring device designed to measure and monitor data such as vehicle speed, engine RPM, and elapsed times. However, the strength of the new unit lies in its differences. Probably the most obvious being its completely redesigned look. This new aesthetically pleasing model was crafted to match the likes of other highly popular A'PEX electronics such as the VAFC (VTEC Controller) and the AVCR (Boost Controller). The new screen utilizes the easy to read VFD (Vacuum Fluorescent Display) with built in light sensor used in many of A'PEX's line up.The new unit also delivers a host of new functions. Standard features include: Engine RPM, Vehicle Speed, Travel Distance, and Battery Voltage (All which can be displayed in real time graph mode, numerical mode, or analogue mode; 1-4 channels at a time.), Peak Hold, Replay (With 60 second playback.), Speed Limiter Cut, 0-100m, 200m, 400m times with trap speed, 0-100km/h, 200km/h, 300km/h times, 100km/h, 200km/h, 300km."

 

Just something else for thieves to target. Changing the speedo gears is quick and easy.

 

Your tach accuracy won't change, regardless of what speedo gears/tires/wheels you run.

 

My Iroc doesn't get parked in public places, and if anyone goes by the garage they gotta get through the chow chow. I want something like that so I'm not always starring down at the gauges, I have to watch speed constantly in this town.

 

I know that won't change, but it'd be nice to have all that stuff up on my dash, kind of how some of the tuner gauges are with the tach, I just need to find one.

 

GPS speed can have issues with being accurate in down town areas where buildings block the signal, also tunnels dont work to

just replace the gears, i know its not what you wanna hear but its easy

you can get a heads up display would kick but

 

I probably will replace the gears eventually, but I've always wanted one of them fancy GPS speedo/tach combination things on my dash. So not to rush but if anyone actually knows of one, please inform me!