07-03-2012, 11:56 AM | #1 |
BMW > Audi+ Merc. Simple math.
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Opinions and experience on cold air intakes
Hey there,
I'm looking for some input wheither I should get a CAI or not. Currently running a flash upgrade and eisenmann race, thought it could be a nice complement. What setup are you running? Whats the verdict? BR /H
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07-03-2012, 12:27 PM | #2 |
First Lieutenant
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Tons of info on this in the engine forum both here and e90 post. There is quite a bit of spirited debate around CAI on the N54 motor.
The two sides are, if you get tuned specifically for one you can see gains as long as you ensure it is a model that isn't just sucking in hot engine bay air. Or, the other side that says just get a drop in filter, keep it clean and call it a day. Personally, I wont be putting one on this car. |
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07-03-2012, 12:35 PM | #3 | |
Colonel
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And, of course, the temperature delta between ambient and the engine compartment pales in comparison to the heat contributed by the turbos. Neil |
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07-03-2012, 12:53 PM | #4 | |
First Lieutenant
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![]() There are also dyno graphs that show a drop in HP and TQ after installation of CAI options. I agree with you that there are options that show gains, in general the answer to his question is "it depends". Those dependencies are very well explained and n54 motor forums both on 1 addicts and e90 post. |
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07-03-2012, 12:54 PM | #5 | |
Colonel
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Neil |
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07-03-2012, 02:52 PM | #6 |
BMW > Audi+ Merc. Simple math.
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I know there are a few posts, none of them really sum up the facts.
How many different types are there? Which will fit? Which one is the best? Is it really worth it? Dirty air into the engine? In case of the aFe kits, should you go with the CAI box or dual-cone? And so forth.... BR /H
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Will drive: 2016 M2 Drives: 2014 Wrangler Unlimited with goodies Drove: 2014 M5 Competition Package, 2012 1M, 2010 GT-R Last edited by Underwood; 07-03-2012 at 03:03 PM.. |
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07-03-2012, 03:02 PM | #7 |
Mbira
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Drives: Sedonna Red 09 135i SOLD
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if you like to hear the turbo spool more and sucking noises from the intake than by all means get a CAI,,Personnally i had 3 different CAI's on my last ride and got VERY tired of all the noise,,,at first it was cool but for the 135i i bought a bMS drop in and am going with the more refined sound..My exhaust is more of what i want to here rather than my car sounding more like a vacuum cleaner LOL..But the bottom line is if you want the sounds and enjoy them than get a CAI...power wise it may add a touch of power and looks nice but on this car it's more for the sound.
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07-03-2012, 03:33 PM | #8 |
Colonel
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This guy measured a pretty good gain with Dinan CAI.
http://www.e90post.com/forums/showth...89#post6763989 |
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07-03-2012, 03:39 PM | #9 |
Resident Kerbalnaut
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Theres a difference between sucking in hot engine air versus the secondary heat transfer caused by contact with the turbos
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07-04-2012, 03:08 AM | #11 | |
BMW > Audi+ Merc. Simple math.
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Had a bit of contact with the Harold at HP Autowerks, he recommended the sealed CAI for my car. What do you guys say?
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07-04-2012, 05:49 AM | #12 | |
Major
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07-04-2012, 05:57 AM | #13 |
Major
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Harold might be right . I have mine with other mods like an IC and akra exhaust .
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07-04-2012, 07:49 AM | #14 |
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here is my CAI system. Without suck the heat from the engine bay.
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AK evolution, AK DP, AFE Stage2 CAI, ER CP, Cobb Stage2+FMIC, ETS FMIC, JRZ RS1, Stoptech BBK, |
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07-04-2012, 07:59 AM | #16 |
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that's Original line from the car. i guess it might be sort of sensor line. You can see that GurppeM provide a soft foam tape to hold line to avoid the dumping damage.
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1 M Coupe AW,
AK evolution, AK DP, AFE Stage2 CAI, ER CP, Cobb Stage2+FMIC, ETS FMIC, JRZ RS1, Stoptech BBK, |
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07-04-2012, 08:03 AM | #17 |
NCOIC of Kickin It
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Yeah, ive seen it on my car too. Ive thought about replacing it with a softer line, and routing it under the intakes for a cleaner look, but i dont know how much pressure/vacuum runs through it, and i dont want the line to collapse.
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07-04-2012, 08:16 AM | #18 | |
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1 M Coupe AW,
AK evolution, AK DP, AFE Stage2 CAI, ER CP, Cobb Stage2+FMIC, ETS FMIC, JRZ RS1, Stoptech BBK, |
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07-04-2012, 08:30 AM | #19 |
Resident Kerbalnaut
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How is the grouppe m intake bette than OEM though? I see the same diameter pipe and the airbox is of basically the same design - just in carbon fibre.
Am I missing something from the pics? |
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07-04-2012, 10:36 AM | #21 | |
BMW > Audi+ Merc. Simple math.
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I think i'll go for the single cone sealed intake from aFe.
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07-04-2012, 11:45 AM | #22 |
Major
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Do they do anything about the size of the opening where the snorkel meets the scoops in the front of the engine bay? I have to imagine this is where the air flow is restricted. The two openings are about 1"x3", and the air needs to make a 90* turn before it enters the snorkel. Would love to know if they found a solution. Thanks.
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