Aftermaket Air Filters

[MilehighLR3]

I've worked closely with the K&N guys over the years at a number of track day events, I've heard their schpeel probably a 100 times. Pvangura makes a valid point, a heavily oiled filter will cause problems with the MAF. On the flip side, an under oiled filter is bad news. Their re-oiling instructions are pretty good.

I've used the K&N on several vehicles for several years and while I've not had any issues, I've certainly heard of those that have (mostly from guys using it with factory air boxes, etc.). Today I have a K&N on my Jeep (sits atop a Howell EFI/TBI kit) and an AFE dry filter on my BMW M Roadster (attached to a Dinan CAI) . . . .I went with the AFE on the BMW because I have an aftermarket MAF (from Dinan) and it offered a little more piece of mind, considering the MAF from Dinan was quite expensive.

Zero problems on the Jeep (that are related to the filter ) and zero problems on the BMW.

On a similar note, CRC makes a MAF spray cleaner, for anyone that is concerned that has already installed the K&N.

 

[delcoquito]

Against the advice of Disco Mike and others, I went with the K&N air filter last week. My new mechanic (www.theimportpro.com) swears by them (said it would add some horsepower) and the LR parts guy from dealership said "I use them in my car" and I was sold.

I don't really go off-roading so I'm not worried about dirt and my mechanic was already well aware of the over-oiling and needing to wait a bit, etc. before installation. Plus, I have in writing that if anything goes wrong he will fix MAF sensor/replace with OEM filter.

If I run into any MAF issues I'll be sure to post, otherwise so far so good.

CD

 

[jesus_man]

Good luck with that filter. I hope it works out for you, but I won't ever put and oiled filter in any of my rigs. I have an old one I am going to measure and see if someone has a cleanable dry filter for it.

J.D.

 

[e24kgold]

Good luck with that filter. I hope it works out for you, but I won't ever put and oiled filter in any of my rigs. I have an old one I am going to measure and see if someone has a cleanable dry filter for it.

J.D.

+1.

 

[Big_Mark]

I've never had an issue with a K&N air filter on any MAF equipped vehicles I've owned.
I'm running one on my D1 and D3. The D1 came with it from the PO, I put the one into my D3. It did not improve mileage or noticeable throttle response improvement, so the issue as far as I am concerned is moot.

I do have to wonder though;
How much oil are the people who have these problems with the oil getting on their MAF filaments using anyway?