Interesting,...I posted this same subject on a thread over in the Engine Mods section about 10 days back(it's still up for those who may want to check comments there),..a few who posted there say it helped their gas mileage maybe an additional 1 mpg or so but not much else,..one guy did an amoritization schedule based on changing out replacing his paper filter at a rate of 3 per year(which seems excessive to me) and said it would take about 5 years to make up the $45 plus initial investment with the recharge kit costs figured etc. (this was not including in any savings realized with gas mileage improvements,..if there really is any) I'm still not totally convinced to go out and buy one yet!! Tom :chevy Save The Wave!!! :cheers:

 

I've been swapping standard filters out with K&N's on bikes for years. I've NEVER noticed a difference in power, unless the old filter was dirty. The power increase is very probably there, but is so small as to not be detectable by the seat of the pants method (but it's fun trying :) ). The advantage of the K&N filters is that they still flow well when dirty. Some bike filters can be real pigs to get off & I'm naturally lazy, so they don't get cleaned often ;) When I last cleaned a filthy K&N there was no noticeable difference afterwards. A standard filter that dirty would have made the engine really sluggish.
Those magnet things are being pushed for old bikes & cars over here that need leaded fuel. The consensus of opinion (even from the gullible that have tried it) is that it's a load of old :bs There's also metal pellets that you drop into the fuel tank which supposedly "catalyse" the fuel. I've seen plenty of claims for both methods (I need leaded fuel so pay attention to all this stuff) but all the +ve ones are from the manufacturers. I've never seen a good report from anywhere else on either type of product (but plenty of bad ones). I'm avoiding both - people will still be using them & if they're as good as the manufacturers claim, I'd soon hear about it (even though they've been on the market for a few years I've not heard a good word yet). Don't waste yer money!
:cheers:

 

I took off the door for full throtle on the hood of the 82 and I notice a difference, especially in cold weather.. :)

 

K&N and all the other performance filters are snake oil, dont work compared to orginal paper. The performance filters clog-up faster and there is no way to clean them as good as new, so everytime they are cleaned they flow less air, for $5.00 I will replace the Fram paper once a year and have a clean filter with-out going through the hassel of cleaning filters. If the snake oil filters worked I am sure GM Honda etc would have installed them or at least offered them as an option. I always get a kick out of the performance claims these snake oil sales men make regarding thier products. Keep your money in your pocket and enjoy your ride

 

I believe the biggest difference is noticed on cars with computer controlled fuel injection (as many of the posts have indicated). The computer is increasing the fuel to compensate for the increased air flow with the K&N filter. On a carbureted car you would need to tune the carb. to feel the same effect.

 

You bet! Absolutely! (On my '83 L88 convertible... :D )

 

You guys could remove the intake restriction &/or tune the carb.

 

ok, I may be the lone wolf here but I did notice a big difference when I first put it on. after a while I guess you just get used to it.
My carb was running a bit rich and vacume was a bit low I think because before I put on the K&N the secondaries were not kicking in quick enough now it works great. I also put lighter secondary springs in but that was before the K&N. I think it probally depends on your set up. Maybe you need to adjust your carb after words because you are getting more air you may need more gas. Just my 2 cents.

 

After neglecting my foam filter on the 3X2 carb setup on my '69, I'm glad K&N makes something else I can use. The foam filter dried up and turned to dust and got all over everything. It was a mess and strictly my fault...for sure. But, the K&N won't ever do that ...plus....I'll keep my eye on it just in case.