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I believe we need to ask ourselves a couple of question before we proceed.
1. Are we looking for performance?
2. Are we looking for cosmetics?
If you’re looking for a performance gain I would definitely remove the coolant from the TB, as it will affect the stock located MAT sensor and possibly affect the MAP sensor reading.
If you’re looking to clean-up the cosmetics of the engine bay, I would leave it alone. The TPI engine has a fairly cool and uncommon look to it.
What effect does the coolant running or not running through the throttle body have on emissions? Living in Phoenix we have emission testing.