Article listing K&N filters as the worst???

[Craig]

Yup, I'm not disputing the numbers.

[632 Regal]

going directly into the K & N? The stock system sucks that cold air not some filter hanging out behind the radiator.

The only benefit of the K & N besides your "clean" look is the intake sound.

Reminds me of when I was young and everyone would flip their air cleaner covers upside down to get that BAUUUUUUUUU sound but even then all the air went through the stock filter.

No one is telling you not to do it, as a matter of fact I think you should do it to your car and see if you can measure a 60-80 mph difference from the stock setup.

[tim]

When you guys talk about K&N filters, are you talking about the cone filters exclusively, or the OEM replacement one that fits in the standard box as well?

PS.
(ot)
Jeff, lets see a pic of those mudflaps, or a link to a previously posted one cause I haven't seen 'em yet.

[Bill R.]

hot air that they are talking about is from the cone type... The factory airbox does a good job of avoiding sucking in engine heat.

When you guys talk about K&N filters, are you talking about the cone filters exclusively, or the OEM replacement one that fits in the standard box as well?

PS.
(ot)
Jeff, lets see a pic of those mudflaps, or a link to a previously posted one cause I haven't seen 'em yet.

[Craig]

going directly into the K & N? The stock system sucks that cold air not some filter hanging out behind the radiator.

The only benefit of the K & N besides your "clean" look is the intake sound.

Any kit for E28/E34 535i cars has the filter behind the headlights on the passenger's side of the engine bay. That's right where the cool air comes in. I've never seen one that puts it behind the radiator.

No one is telling you not to do it, as a matter of fact I think you should do it to your car and see if you can measure a 60-80 mph difference from the stock setup.

Well, it's hard to tell the difference with the turbo there.

[Guelphguy]

I have always used K&N filters and I must admit, this ad got me thinking? I just got this 535i and one of the first things I did was get a K&N....just the kind that drops into the stock box...I have been looking at all kinds of articles and well, It seems that even K&N admit that their filters only filter 99% of what the stock filter would...how much that 1% matters...well I don't know, I assume that anything sucked into the oil will also get filtered out by your oil filter as well....I only put about 17,000km a year on the car, so will I ever see blue smoke as a result of a K&N....????? Dunno?

[Guelphguy]

Just to quickly ad, I assume that a lot of conditions also play into this eg: if you drive on gravel roads....live in dusty areas...only drive on highways....how much dirt is the filter actually exposed to?

[winfred]

when i got my 535 the filter was just clamped to the boot on the afm hanging over the exhaust, it was probably killing 20 hp, i extended the filter to behind the headlight and added a homemade shield, i need to insulate the tube, how much if anything it adds i don't know, i do know that this is the fastest 535i i've driven

Any kit for E28/E34 535i cars has the filter behind the headlights on the passenger's side of the engine bay. That's right where the cool air comes in. I've never seen one that puts it behind the radiator.



Well, it's hard to tell the difference with the turbo there.

[Bill R.]

cylinders... it doesnt even get filtered by the oil filter until it passes through the rings and down into the crankcase. The damage is already done

I have always used K&N filters and I must admit, this ad got me thinking? I just got this 535i and one of the first things I did was get a K&N....just the kind that drops into the stock box...I have been looking at all kinds of articles and well, It seems that even K&N admit that their filters only filter 99% of what the stock filter would...how much that 1% matters...well I don't know, I assume that anything sucked into the oil will also get filtered out by your oil filter as well....I only put about 17,000km a year on the car, so will I ever see blue smoke as a result of a K&N....????? Dunno?