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K&N Cold air intake popping sound
I recently installed new MSD blaster coil packs and a K&N cold air intake on my 03 Expedition 4.6 and It started making this erratic popping sound when it is first cranked up or when its revving down from the throttle. I have true duals run out the back and no codes thrown. I ordered a Jet...- JasonC
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- Forum: 2nd Gen Ford Expedition Engine & Performance
