is ther any modifications on thermostat that I can do to let engine run cooler?

My e46 thermostat top radiotar hose very hot bottom not that hot radiotor fan switch on and temp gauge shows half is ther any modifications on thermostat that I can do to let engine run cooler

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[Nick at Pelican Parts]

If the temperature gauge shows half way your engine is running at the correct temperature. You don't want it too cold because it affects the fuel injection. You may be able to get a lower temperature thermostat to drop it a few degrees but it sounds like you're okay

- Nick