how much more horsepower, if any would a K&N Supercharged air filter give me?

 

None that you would notice.
Pricey item for what you get.

 

thanks for the help you just saved me some money

 

Don't know about those K&N's! I just put one on my '02 F150 and felt like it helped a little. A little more push. But now seems to kinda gasp every once and a while at idle. Took it off and checked it and the small end doesnt exactly match the original. I'm just wondering if the right one or if its all good. Anybody got any ideas?

Bigg Mike
'02 F150 Lariat 4X4 w/4" lift and now just installed Flowmaster duals!

 

Hey Mike, sorry I can't really help you out with your problem since I don't know much about the kits. But was going to say to everyone that I have read that some people claim to have noticed more power when carrying a load, going up hill, or both combined. But seems for the most part on flat level ground everyone just says they sound cool. Other than that, not much else I can say. Honestly though, if I were to get an intake kit for my truck, I'd find something cheaper than K&N's one. Or even make it yourself. Just my opinion though. Best of luck to all.

James

 

Bear with me, my fuel injected knowlege is minimal

I installed a K&N filtercharger air filter on my '96 Honda 300ex ATv. Immidiately i noticed a difference in the throttle response: IT HAD A MONSTER GAP IN THE ACCELERATION!!! I ended up going up 3 sizes on the jets to get it to act right. It made a difference once i got the right amount of fuel in it. All I'm saying is that my experiance with their stock replacement (not FIPK) air filters has been good. It sounds to me like your getting more air than you need, so you need to get more gas in it. don't ask me how, i don't do EFI lol

 

Well yes, different vehicles and engines will always show a difference in performance. Heck, even the same vehicle, same engine, same exact everything can perform differently. I don't know how to explain needing to increase the size of your jets just on replacing the filter and not going to a full cold air intake setup. I don't know if it really does anything but I've heard people even saying their vehicle wouldn't start after putting a K&N setup on their engine, but once they disconnect the battery for 20 minutes and then reconnect, the engine started right up and ran fine.

I know I'm not a master of performance or anything but I do know that colder air and colder fuel will increase your horsepower and torque. Why you ask? Because both air and fuel are a gas and gas condences the colder it gets. Whats this mean? It means that you can cram even more air and fuel into the same area.

Hope this info helps a little.

James

 

Since K&N filters seem to be the #1 modification I see here on FTE, here's my two cents worth.

A motorcycle mag did a test a while back comparing stock paper, K&N oiled fabric and oiled foam air filters. There is no such thing as "free" horsepower. The K&N flowed the most air and filtered out less dirt! Opposite was true for oiled foam, less air, more dirt removed. I am horrified to see how many off-roaders use K&N. A new stock paper element still flows more cfms than the engine can use. The problem is that they do clog up with dirt. That is what they are supposed to do, stop dirt from getting into the engine. Most of us change our oil and oil filters more often than the owners manual recomends, why ignore the air filter? I use the Pep-Boys brand (by Purolator) and check it at every oil change. If I can't see light thru the paper, I replace.

 

a light coat of oil an a k&n
too much oil will make a mess
of the hot wire in the maf.