Engine temp not effected, ran 100 mile trip at 80 mph with no problem,, I just left the stock left side on the engine and the right side in the trunk just incase i did have a problem, I will now remove it,, there is not enough room on the left side to mirror it unless you move the power steering cooling tubing and do something with the AC plumming ,,If i hook up a duel system I may use the stock left 1/2 intake connect it to a Y or T and the 3" on the right. the radiator gets plenty of air from below and around the grilles (upper and lower) jim