Not sure if this has already been stated but i got this from Nissan Sport Magazine
Quote:
Like most production vehicles, the 370z/g37 was engineered with specific target levels for performance and cooling. Nissan has made it clear the majority of driver will nto experience any engine overheating unless tey engage in sustained high-rev operation. The ECM continually monitors coolant temps and defaults to "limp mode" (cutting engine power and revs) if it detects high temps that could damage the VQ37VHR. That usually results in drivers pulling off the track (or shutting off the dyno) and allowing the underhood temperatures to drop. Nissan Motorsports has developed an oil cooler kit (part number 21300-SS370) and it has been branded a NISMO part, meaning that if it is purchased and installed by your dealer, it will be part of the car's bumper-to-bumper warranty. Is this th eideal solution? No, but iit is an option for those who want to expand the 370z performance envelope.
-David Muramoto
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i tryed to type this word for word, its on page 44 of the magazine.