Help with speed conversion from KHM to MPH


jardin

Member
Joined
May 3, 2013
Messages
50
Hi guys, totally stuck with this one as I have tried 2 conversion chips (onto the gearbox VSS / Loom)

Wired as per diagram and the problem I am having is the speed is out by 10mph, also still restricted when I get to 115mph.... but the distance still counts in KHM.....

30MPH on the speedo is 40
60MPH on the speedo is 70 etc etc

spec of car

EK9 pre-facelift
B18c6
P73-003 ecu
 
Where are you wiring the converter into?
When I 1st got my import it was converted but still had the 112mph limit (120mph on the clocks)
Was because the box was wired into the back of cluster, rather than down at the gearbox itself, when up at the cluster the signal has already been through the ecu so still sees the limit.
 
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