K&N and 4.7 HO
#1
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Question: Has anyone added a K&N filter, swapped out the stock airbox, and noticed a severe power drain? I did this and first thing I noticed was the engine noise was louder. When I stepped on the skinny pedal, it doesn't seem to have the speed it once had.
I'm guessing the engine noise is louder due to taking the engine cover off, but what would cause the decress in horsepower? I mean, the truck could barely pull a Focus, while on a trailer.
Or even go up a hill at 60....
Help! I miss my power!
I'm guessing the engine noise is louder due to taking the engine cover off, but what would cause the decress in horsepower? I mean, the truck could barely pull a Focus, while on a trailer.
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Help! I miss my power!
#3
#4
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The answer to the exhaust is yes. The sensors are telling the truck that something is much different....in this case the MAF sensor. I don't know exactly what happens, my best guess is that the computer goes into a safe mode. When you re-set the computer by pulling the positive battery cable for ?? 10 minutes?? The computer now starts to re-learn it's parameters with the new intake. Someone else may be better at explaining this. It made a difference at both my exhaust and intake changes.
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