Hello!
I have installed a AEM EMS to a WRX 01 and it works very good..

But i can't see the vechile speed.
The pinouts on the ecu are right..
And the speedometer works with my stock ecu but when I change to the EMS it doesn't =(
anybody have an idea what it can be ?
Maybe someone can help me out here ?

Thanks

 

Well now the speedometer works..but only if i dissconect the pin to the EMS (A1 pin)

When i put it back the speedometer does not work again! =/

What about this!?
i saw on my workshop manual on the electrical manual that the cable is "shared" from the sensor to the ECU and speedometer..
It's like the EMS takes all the energi or something!
And if the EMS don't get the speed signal the launch comes in when driving...

Thanks