Cold Air Intake - BMW Forum

alewhit328 · 08-23-2005, 11:53 PM

I'm looking to put a cold air intake in my 328i. Something nice and sounds clean. Anyone have any links or suggestions?

Thanks,

Shudogg · 08-24-2005, 08:05 AM

try a search on this subject, i cant count anymore how many people repost this

NESS · 08-24-2005, 11:48 AM

www.cosmosracing.com Only $129. Everyone likes this CAI and its half the price as the others.

SpooldUp · 08-24-2005, 12:21 PM

yes, I have the cosmosracing one and it matches the rest of the underhood parts nicely. It has a good clean growl starting around 1/4 throttle. You have to relocate the horns tho. This will need to be done with any CAI, however.

Hamfisted · 08-24-2005, 12:41 PM

The one from UmNitza is good or the Cosmo Racing one with the heat shield.

UmNitza Cool Air Intake $239

Here's a Cosmo Racing CAI with heat shield on Ebay for about $150, good price.
Cosmo Racing CAI w/heatshield on Ebay

Either one of them with the heat shield would be great. Just be careful not to run through deep water or heavy rain where water might get injested into the motor. There is a water bypass adapter to install to help prevent that.

AEM Water ByPass Valve

Mike

4DR Daemon · 08-24-2005, 12:51 PM

be carefull with a CIA that is why i had to replace my engine earlier this summer. make sure to get an AEM bypass valve.

Rookie · 08-24-2005, 01:06 PM

I'm confused why do you need an AEM bypass valve?

Rookie · 08-24-2005, 01:31 PM

Nevermind I figured it out.

Bear · 08-24-2005, 02:05 PM

One thing to remember, if you do not enclose that filter, or get it out of the engine compartment you are still inhaling hot air and hot air does not make horsepower.

WarNox · 08-25-2005, 07:59 AM

Quote:

Originally posted by 4DR Daemon@Aug 25 2005, 05:51 AM
be carefull with a CIA that is why i had to replace my engine earlier this summer. make sure to get an AEM bypass valve.

[snapback]372124[/snapback]

what does that mean?

obd2guru · 08-28-2005, 03:14 AM

means that the "cia" aka cold air intake setups , normally dont come with a water bypass valve and since most cia s are closer to the ground
or lower than the stock level if you run into a puddle of water then water goes into the engine via the cia ,hidrolocking your engine and the
water bypass valve prevents that by sucking air trough the minifilter instead of sucking water as water is heavy .

WarNox · 08-29-2005, 08:03 AM

cool, makes sense!

but where do u install it?

Rookie · 08-29-2005, 11:32 AM

I think it goes inbetween the engine end of the cold air intake and the throttle body.