Stealth,
hehe...it's bcoz my stock Proton meter had a stupid problem. Sometimes driving until halfway (or even idling), the tachometer needle would suddenly goes up to 4000~6000rpm automatically, it would drop to normal after 3~10mins. The engine was not revving so high, just the tachometer went mad. :blink:
i had another fren who drives Siemens ECU Wira 1.5 also face this problem, i heard from a "unconfirmed" news saying it's bcoz the sensor position is not good, when the sensor heats up, the tachometer goes mad, don't know it's true or not. :rolleyes:
Anyway, after changing to Lancer meter (6500rpm redline one), no more this problem. :)