Anyone using the BMC CDA intake? - The Unofficial BMW M5 Messageboard (m5board.com)

mottati · 25th June 2004, 00:34

BMC has their "carbon dynamic airbox(s)" which replace the stock airboxes on the M5. I've seen ads for them in Bimmer magazine, and was curious if anyone has tried them.
thanks,
Mike

FAST 5 · 25th June 2004, 04:21

Do you have a PIC or a link or us to check out?
Robert

mottati · 25th June 2004, 07:55

Quote:

Originally Posted by FAST 5

Do you have a PIC or a link or us to check out?
Robert

Here's a link. http://www.bmcairfilters.com/infoCDA.asp
They have a kit for the M5 that includes 2 airboxes and ducting. Haven't seen any dyno numbers yet (for an M5) but they do show gains on M3s.
Mike

DejaVu · 25th June 2004, 15:04

Here is a pic of BMC CDA-Box on M5.

mottati · 25th June 2004, 19:06

Quote:

Originally Posted by DejaVu

Here is a pic of BMC CDA-Box on M5.

That's interesting, it looks like they actually move the mafs further from the plenum. I'd think the spacer would go between the mafs and the airbox.
Mike

XrayMD · 25th June 2004, 19:48

I saw these in an add about a month ago and was curious about them as well. Sure would like to hear from someone who has them to see if they did anything for them.

mottati · 25th June 2004, 20:51

Quote:

Originally Posted by XrayMD

I saw these in an add about a month ago and was curious about them as well. Sure would like to hear from someone who has them to see if they did anything for them.

I'm tempted, they're cheap enough. I found them at an internet store for something like $500. It also seems like it'd be easy to integrate them into a CAI... (despite my recent SES escapade, i haven't learned to stop messing with things...)
Mike

edit: what the heck, i ordered the kit. I'll post any results i come up with.

XrayMD · 25th June 2004, 21:13

Way to go Mike! That's the spirit! That's what I did a few years ago when I jumped in and ordered the AA CAI kit because no one knew much about it! I can't wait to hear what you think...if they work, I can get rid of my K&N's!

mottati · 25th June 2004, 21:52

Quote:

Originally Posted by Ritter

Mottati, are u sure u wanna try them

SES light might be worse then ever

Have you changed your MAFS?

Try CAI with original airboxes and filters..at least the "original filters" keep the dirt away to come into the MAFS.

The CAI, really it was just ducting to the stock airboxes, is what was causing my ses light in the first place. The MAFS are fine, and were replaced about 8 mos ago. The BMC filters, from all that i've read, are excellent filters from a flow and filtration standpoint. They are supposedly far superior to k&n from a filtration point of view. If i get ses lights, i can always take them off!
I think my ses stemmed from my not well enough designed air intake that i cobbled together. I was either getting turbulent flow at the mafs, or unequal flow to the left vs right. I've already had the powerchip set up for a CAI, so i should be ok from a software point of view.
Mike

mottati · 3rd July 2004, 09:18

I received the cda's today, and put them on the car tonight. I haven't ran the ducts to the foglamp area yet, as i didn't have enough time to really work on it. I was a little disappointed in that the "M5 kit" essentially is 2 generic cda's, about 2 ft of ducting and a plain metal bracket. You don't get custom for $500 i suppose! It all fit in well enough with a little forcing

I checked for an ses light before doing the install this time and all was clean! The ducts are down in the front bumper area, i've trimmed the plastic on the foglight bezel, so outside air is getting up into that area. A quick run after the install felt pretty good. A bit more intake sound, and the car felt strong. I didn't drive much at all (just about 2 miles), and it was cool outside so we'll see how it goes over time, especially after i get the ducting in place. The airboxes were cool to the touch when I got home, so cool air is getting in there, and they look nice!
Mike

How do i put the pic in the text?