Which filter is better. I bought K&N because that is what my truck has and I love the HP gains on the tacoma.. Is BMC or another brand better...

Th K&N is no better than the stock air filter. The only one that makes a real difference is the BMC Race Filter, but it requres a PCIII to work properly

How much is it compared to the K&N and do I sacrifice engine protection?

I paid 65 shipped for my BMC. The filter is designed for track use so you do loose some protection, yes.

well...that lack of protection just discouraged me. I'll just go with the K&N and PCIII setup...got a few according to the dyno

BMC also makes a filter designed for street use, but I'm not sure how it compares to the K&N and the Stock filter, you may wanna look into it. Also, if your getting a custom map, before you do I suggest getting the Graves V-Stacks and possibly the Slide stops, to get the most out of your PCIII

:twisted:

I have a 2005 R6 with a Yoshi RS-3 slip-on and BMC street filter. Althought the tech folks at Yoshimura said I would not have to re-map, the bike ran very lean and rugged with the two mods.

I added a PCIIIusb and had it custom mapped, but it still was running to lean and ragged under 4,000rpm. I changed to a map from PC web-site, the Graves full exhaust with after market filter. It now runs great, still a little ragged in the low rpm's, but get it above 7,000 and best over 10,000 rpm and the bike just rips.

The race BMC will be much to lean even with a PC, it requires other major mods.

The race BMC will be much to lean even with a PC, it requires other major mods.

Not true at all, my bike pulls hard through the whole RPM range. It doesnt lean out at all with my map, I have slide stops, v-stacks, BMC Race and a PCIII

BMC = Italy K&N = USA ........ Both are great air filters.

pick one and ride on !!!

In the UK club racing scene BMC tend to give better results than K&N.

Mind you a lot of us take out the filter completely (if we have tuned engines) and just run the metal guaze. As long as you coat the airbox with a layer of grease to catch the really small particles and clean it regularly you should not have too much trouble.

can someone explain the vstacks and the slide stops for me i have no clue what they are??? i understand everything else but those two things

Vstack help make a smoother air tansition from the airbox to the throttle bodies, less turblence = more power

Slide stops hold the slides inside the TB's open and give you better throttle response when to whack open the throttle.

You should use a Powercommander for either of theses mods but it is a must for the slide stops.

Close on the v-stacks, they tune the reverberations of air going into the throttle bodies. The diff lengths "tune" the incoming air to diff RPM's, think those loud ass tuned intakes on rice mobiles.

as for air filters, dunno if you have them in the U.S, but the U.K does i think, try the DNA filters, I've had good results from them on bikes I haven't had success using the other two.

would I have to rejet a carberated r6 if I decide to use a performance air filter, I also have a full exaust system..and do you get a noticable increase in performance.

i'm running a BMC street filter just because it gives good protection and it is a lifetime filter. Also have Jardine slip on, but no PCIII. Bike runs just right with that "street" filter.

By smidsy
"Mind you a lot of us take out the filter completely (if we have tuned engines) and just run the metal guaze. As long as you coat the airbox with a layer of grease to catch the really small particles and clean it regularly you should not have too much trouble."

Now that's what I'm talking about! :YEA