$600 seems pricy but it has the ability to show speed, rev, water temp, ignition timing, injection timing, intake temp, A/F, battery charge, oil temp, 4wd power ratio etc. depends on the car of cos which is a bargain consider the amount of gauges (and the cost of them) to show all these information.
whilst on the topic of engine temp, have anyone used the "Redline Water Wetter" radiator coolant? i did a few searches on the net and i found many good reviews on it....worth a try i guess....
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