If you're not using USDM temp sensor, you're getting bogus numbers. USDM instrument doesn't like the JDM sensor. Those numbers you gave are more appropriate to oil temperatures.smileyjuggalo said:does anybody know what the normal coolant operating temp for the gti-r is? warm days(80) and my car cruises at 230 degrees. i've seen it get to 250 when i drove the dragon. any ideas?