Just ordered a thermostat from ESC tuning, but realized that the one I ordered is the lowest temperature thermostat - 71 degrees. The stock is 87.Should I expect any problemsand what will be the difference with the lower temp thermostat?

1996 Audi A4 Quattro V6

 

I meant ECS - my bad....

 

the lower temp thermostat will open b4 the stock high temp thermostat will. ur car will run cooler but i think it u use up more gas because the car's ecu will monitor the temps and recognize it's not the same as b4 and run more gas through to warm the engine more. it shouldn't kill ur car though.