Shouldn't be a problem as long as it gets cooler air from between the battery and the fusebox, there is tubing opening up the bottom of the guard, which forces cooler air into the guard and up into the engine bay. I have tested this driving on the highway and around town, stopped and checked the temp of the pipework and it's cold. the only time it heats up is when standing still, but that is temporary. On a side note can you buy the heatsheild seperate?