K&N intake air system
Does an K&N air intake system really improve MPG and horsepower.
Forum Discussion
I've posted this answer before and here goes again. My son is a NASCAR driver and he says they work great on race cars since they need all that air at high rpm's. plus they tear down their motors after every race, bar none. BUT, we RV'ers do not have the money to have our trucks engines torn down after every camping trip, so the answer is NO. don't use them for Rv towing. waste of money, use the money to buy gas and forget about it.
