Hi, can anyone tell me if this is a UK or Jap ecu, it was taken from a Jap z which was fitted with UK clocks.I have fitted the clocks into my Jap z and the speedo is only reading 40mph when the car is doing 60mph at 2200 rpm, speed taken from tomtom, there was no box fitted to the back of the of either speedo but mine was calibrated in mph and fitted with a 180mph face,

how many ways are there of calibrating the clocks to run in mph,would it be safe to put the ecu in my car, both are TT Auto.

 

cheers Paul

 

opps forgot the picture. It has 23710 46P65 A18-000 MD9 3325 on the label.

With picture now.

 

Paul

As a guess, do you have a N/A speed sensor on the gearbox and a TT rear diff?

 

Can't think of anything else that would cause it to under-read... Unless the convertor was put in another place?

Hi, can anyone tell me if this is a UK or Jap ecu, it was taken from a Jap z which was fitted with UK clocks.I have fitted the clocks into my Jap z and the speedo is only reading 40mph when the car is doing 60mph at 2200 rpm, speed taken from tomtom, there was no box fitted to the back of the of either speedo but mine was calibrated in mph and fitted with a 180mph face,

how many ways are there of calibrating the clocks to run in mph,would it be safe to put the ecu in my car, both are TT Auto.

 

cheers Paul

 

opps forgot the picture. It has 23710 46P65 A18-000 MD9 3325 on the label.

 

Not sure about the ECU but the problem doesn't really make sense. The ECU does not affect the reading on the speedo. So, if you've put UK spec clocks into a Jap car and it under reads, then it sounds like you have a speedo convertor wired in there somewhere already. Did your previous clocks read right ? Do the new clocks have the same scale, or even a standard scale ?