Review on 🛰️ VDO 340 786 GPS Speed Transmitter by Mario Portillo

I had a heart rate sensor on the rear CV joint and it seemed to work fine but once I hit 70mph the speedo went haywire at times and didn't read speed appropriately. I couldn't fix this problem. I decided after doing a lot of research on how well the GPS unit would work and where there were good mounting points, I found that the fiberglass was out of the way and I had a fiberglass hood. So I installed it under the hood, connected it directly to the speedometer and programmed the speedometer according to the instructions. It works perfectly, the speed is very accurate and the speedometer is always accurate and stable at any speed. This fixed a very annoying problem!