M5ROKIT said:Yes, I meant K&N. Since I've already opened up the front ducting by drilling holes and installing flex tube, I'm looking only at the air benefit of the K&N vs the cold air and ram. I know the kit you installed and I still might do it if the ram effect is better than the K&N effect. The brake cooling evens out.I've read a few interesting posts on the negative effects (supposed) of the K&Ns.
Before I got my M5 I owned a '95 540i sport. I was going to switch to the K&N filter to try and up my performance. Here's a web site that I found that made me change my mind. Hope it helps.M5ROKIT said:Yes, I meant K&N. Since I've already opened up the front ducting by drilling holes and installing flex tube, I'm looking only at the air benefit of the K&N vs the cold air and ram. I know the kit you installed and I still might do it if the ram effect is better than the K&N effect. The brake cooling evens out.I've read a few interesting posts on the negative effects (supposed) of the K&Ns.
Not a really good example...but...doesn't Dinan use K&Ns with blue dye on all of their CAIs? :viking:M Power said:Rob, I seem to recall an article that stated that the stock paper filters flow as well as any after market filter. Maybe it was Dinan who checked this on a dyno. .. perhaps some other board member can help.
As for fouling your MAFS, well there are too many members here who have had that experience and that would be enough for me to stay away from the K&N's..
And then re the Ram Air effect.. just my opinion, but I figure for the AA system to really work, you would have to driving a little faster than the 55mph limit we are allowed to drive before you got any benefit... :M5rev:
I would install it only for the eye candy appeal and any hp boost that resulted would be cream for me ..
not sure if it's k&n or not, but it sure does look like a k&n with blue dye... (dinan colors!). I have them, and the inside of my CF intake tubes are clean, no oil residue, no dust etc. Dinan specifically recommends not cleaning and reoiling their filters.drallen said:Not a really good example...but...doesn't Dinan use K&Ns with blue dye on all of their CAIs? :viking:
Mark
I too have the AA CAI with the K&N filters. I have had this on the car for more than two years without an issue, until today when one went bad.Ahmed said:Guys,
I have drop-in K&N filters. And YES, i did have to replace my MAF's. But ever since i washed them, lightly oiled them and kept them dry in the sun for a good 6 hours.... they have been wroking fine with me.
they definetly flow more air than the paper ones, thats a no brainer! they also work well with the AA ducts!
The question is... if the K&N's are so hazardous to the MAF's, then why do manufacturers like GruppeM and Dinan and others use them?
