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My vote goes for the K&N, I have the 77 Series installed in my Ford truck that is my reason why. But seriously it performs really well if you'd ask me.
I have an 07 screw 4x4 and I installed the same thing....but have a high pitched whistle at low rpm and light throttle. Do u know what the problem might be and how to fix?
I have an 07 screw 4x4 and I installed the same thing....but have a high pitched whistle at low rpm and light throttle. Do u know what the problem might be and how to fix?
I know this is probably the obvious but try looking at your seals that the clamps cover. You might not have a perfect seal.