hey peeps I have a few questions for ya'll, I out in my JDM cluster yesterday and I love it but at idle the tach reads like 2900 rpms so its like 2000 above what the autometer is saying anyone no of a reason why this would be??? Ohh yeah and by the way if anyone knows the kph vs mph I would appreciate it I had it somewhere but can't find it right off. As always, thanks for all the help. PEACE

 

bump need help, send quickly