Quote:
Originally Posted by Frank Lee
How do you figure?
Paper filters go 50,000m easy, in good driving environments even more. $35/$7=5; 5 x 50,000m = 250,000miles before k&n "saves" you money, if not longer. Don't forget the cost of the cleaning and reoiling kits! Oh, and the MAF cleaners you need to buy and use after the k&n gooks it up!
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the car would have to use a MAF first to gunk it up, & second, most of those issues are from people over oiling the filters, i've never had an oily intake from a K&N filter
plus i have a recharge kit, since 5 other cars at my house use K&Ns, so 10bucks for a recharge kit every couple years is basically unnoticeable anyways
ram-air picks up alot of dust & dirt fast, paper filters load up & start dropping flow almost immediatly, which in turn cuts down on power & fuel mileage, since the engine must work harder now to draw in air & also potentially sucking dirt thru the filter due to higher pressure(vacuum) difference on the filter
then if it does increase MPGs in her car, which i suspect it will, since its such an undersized filter for the engine, but i've now almost doubled useful flow, it'll pay itself back pretty soon
alot of the time, K&N stock replacement filters don't improve upon flow, cuz sometimes, the stock paper element is quite large & has plenty of flow capacity for the stock/given engine, but when the filter is quite small for given engine, aka like a Cavalier, the additional flow from the K&N is actully usefull, & don't forget about the rest of the intake design, some cars have horrific intakes, i remember a friends '92 Escort LX had an opening around 1.25" in diameter!!! right at the beginning of the intake...removed that piece along with the resonator in the fenderwell, improved acceleration drastically & MPG from now having a almost 3" opening for the airbox
ok, enough typing for now
