One of the reasons the manufacturers run the higher temp is to reduce emissions as it helps cook it away. I have always changed my thermostat to a 160 because it just lets more coolant flow. I did the bypass I believe it is a 1/4" tube. I did mine for about 3 bucks. My t-stat came of the previous Yukon XL. I bought it for 50 bucks online.
Black H2 Adventure Series+ all other options.
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Black H2 Adventure Series + Luxury, AirForce One intake, Throttle Body Bypass, Gobi Rack w/2\" Brackets & 4 PIAA 580 Lights, Xenarc HID, Alcoa Wheels, Goodyear 37x12.50x17 MT/R, Warn 9.5Ti Thermometric Winch, DiabloSport programmer,160 Degree T-Stat, B&B Headers and full dual exhaust by B&B as well, ARB fridge/freezer, Full Audio upgrade.
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