I bought this kit off a guy on 2gnt pghsebring
I cant connect to the Hahn ECU using the R4
I opened the customer hahn map press connect to ecu
I get a ERROR CONNECTING.

I've tried 2 cables one PC and a laptop.
I wired the RED to 12v switched soldered and shrink then later stabbed it with a test light to make sure I had power.
Black to a good ground, yellow to the gray wire on AUTOMETER 9117 TACH ADAPTER.


Got rid of the in line Fuel pump replaced stock one with a GSS342 255 LPH High Pressure Pump
Did the complete Portfueler install,starts and idles fine BUT No way to know if the portfueler module is working.

How can I tell if the module is operating if I cant connect via serial port?

BTW No wide band yet I was gonna sell the vortech super fmu and stuff to get one.

any help or ideals much appreciated.