Homemade cold air intake

Lou2 · 02-27-2011, 11:22 AM

Just wondering if anyone has had success fitting a homemade cold air intake.
Is it possible to buy intake tubing and tube the filter to outside the engine bay like most cai's. Somewhere behind the bumper?

e90pilot · 02-27-2011, 02:10 PM

Yes. Allmotor has done that. He cut a hole in the airbox and routed some tubing next to the brake duct. It's very similar to Dinan's setup.

Check this thread out: http://www.e90post.com/forums/showth...ghlight=intake

k3m0-330i · 02-27-2011, 10:11 PM

i think there is no need for that. just drop a k&n and call it a day.

Lou2 · 02-28-2011, 11:32 AM

Allmotor did not do that. He simply copied the dinan set-up where they bring in cold air form the lower front bumper.

What i am asking is if anyone has eliminated the air box completely and used aluminum intake piping to relocate a cone filter outside the engine bay (for example behind the lower front bumper)

Several CAI for other cars do this with good results....why hasnt this been done for our cars?

TSM330i · 02-28-2011, 12:58 PM

Quote:

Originally Posted by Lou2

Allmotor did not do that. He simply copied the dinan set-up where they bring in cold air form the lower front bumper.

What i am asking is if anyone has eliminated the air box completely and used aluminum intake piping to relocate a cone filter outside the engine bay (for example behind the lower front bumper)

Several CAI for other cars do this with good results....why hasnt this been done for our cars?

Look at AFE

c_jeong89 · 02-28-2011, 02:41 PM

there's really not that much room to work with to fit an air filter down there, that's why people mainly use the piping to redirect the air. Still need a box to prevent heatsoak with that option though. The size of the filter you can actually fit behind the lower bumper grill prob won't be a large enough size to be more efficient than what say the dinan intake is.

02-27-2011, 11:22 AM	#1
Lou2 Private 8 Rep 68 Posts Drives: 2007 328xi 6MT Join Date: Jan 2011 Location: NY iTrader: (0)	Homemade cold air intake Just wondering if anyone has had success fitting a homemade cold air intake. Is it possible to buy intake tubing and tube the filter to outside the engine bay like most cai's. Somewhere behind the bumper?
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02-27-2011, 02:10 PM	#2
e90pilot Freight Dawg 105 Rep 2,103 Posts Drives: E90 325i Join Date: Jul 2005 Location: Oakland, CA iTrader: (3)	Yes. Allmotor has done that. He cut a hole in the airbox and routed some tubing next to the brake duct. It's very similar to Dinan's setup. Check this thread out: http://www.e90post.com/forums/showth...ghlight=intake __________________ --Marcelo '06 Arctic Metallic 325i \| Sport Package \| 6MT \| Dinan Stage III suspension \| Dinan exhaust \| 330i manifold swap! Click here! \| Active Autowerke tune \| 135i Brake Calipers \| Deiselboost caliper brackets \| E46 M3 front rotors
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02-27-2011, 10:11 PM	#3
k3m0-330i Major 73 Rep 1,375 Posts Drives: 08 335xi Join Date: Nov 2009 Location: Albany Ny iTrader: (12) Garage List 2006 330i [0.00]	i think there is no need for that. just drop a k&n and call it a day. __________________ Current 2008 M6 e63 v10 6mt Current 2012 e70 x5 35i -jb4 2008 335xi e92- Sold 2007 335i e90 - Sold 2002 Taig / Red / / / M3 - SOLD
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02-28-2011, 11:32 AM	#4
Lou2 Private 8 Rep 68 Posts Drives: 2007 328xi 6MT Join Date: Jan 2011 Location: NY iTrader: (0)	Allmotor did not do that. He simply copied the dinan set-up where they bring in cold air form the lower front bumper. What i am asking is if anyone has eliminated the air box completely and used aluminum intake piping to relocate a cone filter outside the engine bay (for example behind the lower front bumper) Several CAI for other cars do this with good results....why hasnt this been done for our cars?
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02-28-2011, 02:41 PM	#6
c_jeong89 Banned 90 Rep 2,097 Posts Drives: E90 TiAg Join Date: Feb 2009 Location: Irvine/Bay Area iTrader: (16)	there's really not that much room to work with to fit an air filter down there, that's why people mainly use the piping to redirect the air. Still need a box to prevent heatsoak with that option though. The size of the filter you can actually fit behind the lower bumper grill prob won't be a large enough size to be more efficient than what say the dinan intake is.
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