SAFC II Problem...RPM reading inaccurately

[TAI92GSX]

I just got done wiring the SAFC II in my 90 TSI AWD. Everything is reading correctly excep the RPM in the SAFC II is not reading what it whould be. The stock rpm tack in the car is reading 750-850rpm idling and the reading in the SAFC II is reading somewhere around 350-400rpm. While cruising, the RPM reading in the SAFC II is reading little bit more than half of what the reading on the stock rpm tack is showing. For example, if the stock tack is reading 3000rpm, the safc2 would only read about 1600-1800rpm. I've installed couple SAFC(fist model) in the past in 2G and never have seen this problem. I followed the installation direction in the manual, so everything must be install correctly, but I don't know what can cause this. Could any loose connection cause this? Any help would be appreciated. Thanks

 

[mrcooley]

mess with the settings on there and change it to a 2 cyl.

 

[TAI92GSX]

Thanks, turn out switching to 2 cyclinder do the trick because the rpm is twice as fast now and the reading now is almost the same.