Originally Posted by bonnyguy
Is there a cheaper filter then the KX-4750 that has a hole for the sensor or would I have to drill a hole in the pipe to mount the sensor close to the filter?
There are cheaper filters, but they don't have the best reputations around here. K&N will give you the best performance in a readily-available filter. There are members who have bought cheap alternatives from parts stores, but some of those filters are so restrictive that when you pour water into them, it doesn't even leak out! If a filter holds water, you're guaranteed that it'* flowing about as many CFMs as a chunk of plywood.