Re: Thermostat Modification to Lower Temps
Do you have a specific reason to lower the operating temperature of your engine? Or, to put it another way, what problem are you solving?
Yes, thermostats are pretty basic things, but the all of the systems in your engine are not. In modern cars, they are all computer controlled and all expect each of the other systems to be doing their part. Coolant temp, engine temp and even the temp in the engine bay are all tightly controlled these days. The ECU, when it modifies timing, fuel, etc, expects the engine to be at a particular temperature. Change that temperature, and the ECU won't be able to optimize your engine. Lower the temperature and the ECU might keep the engine in warm-up mode, where it richens the fuel mixture. At the best, this will hurt your mileage, at worst, you could burn out your catalytic converters.
’08 Cayman S, 6MT, PASM, Sport Chrono, Sport Seats & Steering Wheel, 19” Carrera Sport Wheels, PCM, Bose, Xenon, plus some other stuff not worth mentioning