Elise S2 Speedo and Tachometer not reading correctly

[Mike_Leonard]

Hi all,
I have an 04 Elise 111s S2 and have a problem with the speedo and rev counter reading incorrectly.
With the ignition off the tacho reads 500 revs and the speedo reads 12 mph
With the ignition on (before the engine is started) the tacho reads 750 and the speedo reads 18
When the engine is started and idling it sound perfect but the revs show about 1700 and the speedo shows 18.
Has anyone experienced this problem? Any ideas or solutions?
Thanks in advance.

[LotusEater666]

Try resetting the stack/shurlok unit thus:

http://wiki.seloc.org/a/Stack

[Mike_Leonard]

Thanks, I reset the clocks and it's all back to normal