I got a K&N drop in filter. It seems to add a pony or two, but im sure thats just wishful feeling. Two questions though. Will the oils on the filter negitavely affect my sensors such as tps. annnnd #2...does it actually add more than like 1-2 horses?

 

nope, will not affect any of your sensors... when you clean it and re-oil it, dont go hog wild on it and you'll be fine. read the instructions... I would expect 7~8 hp & some torque out of it...

 

probally added 1 miniature horse. not a full grown one. and the oil wont do anything.. just collects dirt

 

I didn't notice a difference when I put mine in.

 

I hear a lot of people say, yea i felt something; and a lot saying, no i didnt notice anything. It could be the weather, but it feels slightly stronger. Sounds better atleast. Id really like to open up the intake box though. That thing is beeeggggging to breath.

 

why would you? QC 4x4's weigh 5000 lbs plus...
on a stock motor
5000 lb/245 hp = 20.4 lbs/hp...
5000/255 (best case) = 19.6...
20.4 - 19.6= 0.8 change in your power to weight ratio...

I put one in my 3.9 std cab dakota and barely felt it. noticed it more on the top end.

 

yea, but it easily adds like 600rwhp.

 

The best comparison test of the KN drop in versus other filters was at this Duramax website (now off line) but that is saved in the Internet Archive run by Google:

http://web.archive.org/web/200412082...011/SPICER.htm

my estimate is that at the highest rpms (+4000)
the 'oiled gauze' air filter like the KN
adds no more than 1% to peak hp.

Below 3500 rpm, where most daily driving is done, the gain is too little to measure.

 

it must have some affect... I gained .75~1.0 mpg in the dak I tested it in...

edit: forgot to say that I ran 2 tanks with it before yanking it... mileage dropped back to where it was.

 

I felt absoloutley nothing gained no MPG.
it was a waste of money in my book.

I spent less on a 13x4 round filter and actually noticed gains.