No, I have a stock thermostat. A "cooler" thermostat merely opens the coolant flow from the radiator earlier (at a lower coolant temperature), making it take far longer to reach normal operating temperature. Having the thermostat open earlier isn't going to cool down my temperatures.
Yes I use Dex-Cool, no it won't clog up the system. That's why it's been running perfectly fine for the past 9 years on it, and everything I've disassembled looks clean.
The downpipe has some wrap on it, and I'm getting a turbo blanket soon. Fans cool things down minimally. I should do a CO2 sprayer for my radiator, ha. Spray it whenever the temps get high.
EDIT: ANSWER
In case anyone was wondering, replacing the thermostat solved the problem. It coincidentally failed during the turbo install.
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