So I have been noticing now that it is starting to get cold, at night that when I turn on the heat the car goes from 190 degrees to 200 degrees. Would it have anything to do with the ZFR 6758 turbo coolant line? I had the car for 2 weeks before I installed the zfr turbo so I have no clue if this was happening before. It's nothing I'm to conserned about just curious if this is happening to anyone else.

 

Mine does the same thing. Usually hangs around 183* while cruising, but if I turn the heat on it runs up to 189* and stays there until it's turned off. Did it with stock turbo and now with the Z54. I think that's just normal for the vehicle.