newtofords
Full Access Members
So K&N has two types of intakes for the 5.4L for "cold air" applications. Apparently the FIPK with the composite tubing is quieter, and cooler, but the 77 series with the metal tubing is louder and slightly more powerful. Can anyone explain their experiences with the two so that I can get a real world comparison? How much louder is the metal tube intake? Any complaints? My stock expy is pretty quiet. Sometimes I wish I could hear more of the V8 roar.