My engine has lost its growl Have to floor it very hard to hear anything from my hood now.Easy to find the cause of this problem as my area is constantly shrouded in construction dust from the development all around.The guess then I need to clean my filters more often, but I'm fearful in using the cleaning oil for my K&N filters.From what I have been told, using too much of it on the filters can cause the oil to spray onto my MAF sensors and burn them out. And those aren't cheap to anyone.Does anyone know the correct (and safest) method of cleaning them and how to check if too much oil has been used on the filters?Thanks.