[1fastt2]

Just recently I've noticed my coolant temps have only been between 178 to 193F. Usually they're 200 to 220F. I have been doing a lot of work on the car changing single turbos and wastegates in and out. Is there something I could have knocked loose that I'm over looking? There no CEL or stored codes. Mods are in my signature.

[Jeff@TopGearSolutions]

That sounds like a blessing in disguise.

Are you using MHD at all? They have a new sport and race setting for cooling tables which targets 185 (race) and 195 (sport).

Otherwise maybe your cooling temp sensor isn't operating correctly.

[GoRomeo]

Originally Posted by 1fastt2

Just recently I've noticed my coolant temps have only been between 178 to 193F. Usually they're 200 to 220F. I have been doing a lot of work on the car changing single turbos and wastegates in and out. Is there something I could have knocked loose that I'm over looking? There no CEL or stored codes. Mods are in my signature.

Bad thermostat perhaps? Usually there is a code. These thermostats when they go bad, they get stuck in the open position. You can test and feel on top radiator hose. When car is cold coolant is not suppose to be flowing.