Lsd And Speedo Problem?

[dan7773]

I have recently changed the diff on my 04, is200 se with man transmission, with a Limited slip diff from an altezza rs200. Fits fine,better performance, only problem is the speedo is out by about 12mph. Is there any way i can fix the problem,i know there is a speed sensor on the gear box would replacing this fix the problem or will i just have to live with it.

[Monster-Mat]

if you only changed the diff there shouldnt be an issue, unless the diff you fitted had a different crown wheel and pinion, there is a fix for aftermarket crown wheels in that you take a speed pulse from the front abs sensor (right) grey wire in drivers side footwell, you would need to get the wire diagrams to identify this, this is a mod i did many years ago when i fitted 180mph TTE speedo cluster