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      12-31-2011, 11:53 AM   #1
nicoz
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Intake worth upgrading?

Worth upgrading the intake?
Options?
Your opinion would be appreciated.

Thank you
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      12-31-2011, 02:38 PM   #2
zayzay
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I think so. I have the afe intake system stage 2 and it makes a difference in the perfomance of the car.
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      12-31-2011, 03:39 PM   #3
EINSER M
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zayzay do you have the open or closed system?
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      12-31-2011, 03:49 PM   #4
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open system
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      12-31-2011, 04:13 PM   #5
EINSER M
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Quote:
Originally Posted by zayzay View Post
open system
so does it look like when the hood closes, it presses nicely against the air box and it effectively closes it up?
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      01-01-2012, 07:51 PM   #6
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Quote:
Originally Posted by EINSER M View Post
so does it look like when the hood closes, it presses nicely against the air box and it effectively closes it up?
No, i think a gap exists(1-2 inches) but I think plenty of fresh air gets to it with the scoops and the snorkels delivering fresh air.
http://s1216.photobucket.com/albums/dd380/clcbjc123/1M/

Last edited by Oaktree; 01-01-2012 at 07:57 PM..
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      01-02-2012, 03:51 PM   #7
nicoz
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aFe vs BMS vs cp-e?
Any advice?
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      01-02-2012, 05:04 PM   #8
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after reading about this for 3 days and gathering info from posts, battles and bla blas im going with the AFE stage II w/ heat shield setup tomorrow w/ **********s.
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      01-02-2012, 07:08 PM   #9
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Quote:
Originally Posted by EINSER M View Post
after reading about this for 3 days and gathering info from posts, battles and bla blas im going with the AFE stage II w/ heat shield setup tomorrow w/ **********s.
That's where I purchased mine from. Installation is a breeze and the final product quality is good.
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      01-03-2012, 12:34 AM   #10
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Quote:
Originally Posted by nicoz View Post
Worth upgrading the intake?
Options?
Your opinion would be appreciated.

Thank you
I am not convinced with the data out there for a turbo car that it is worth it.

However, it is only cheap, and doesn't affect performance. The question is what's the delta T with and without the intake after compression.
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      01-03-2012, 08:54 AM   #11
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Quote:
Originally Posted by EINSER M View Post
after reading about this for 3 days and gathering info from posts, battles and bla blas im going with the AFE stage II w/ heat shield setup tomorrow w/ **********s.
Interesting choice.

FWIW, a vendor (not **********s) that carries AFE intakes told me that the closed system likely produces less hp than the open intakes but is less prone to heat soak.

Of course, I've never understood how an air filter has enough thermal mass/density to suffer from heat soak.

And, as previously discussed, the additional heat produced by an intake charge that includes heated air from the engine compartment is probably extremely small and may, in fact, be completely offset by the increased efficiency of turbochargers that work less hard to suck in air.

Neil
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      01-03-2012, 01:17 PM   #12
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Would the open intake only suck hot air at a standstill but once moving its getting fresh cool air? I guess unless your drag racing then it would not matter. I much rather enjoy putting the pedal down after im rolling along in 2nd gear where hot air would not be an issue.
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      01-03-2012, 02:56 PM   #13
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Exactly.

Also it sounds much better. (If you are into turbo cars)
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      01-03-2012, 07:19 PM   #14
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Quote:
Originally Posted by MDORPHN View Post
Interesting choice.

FWIW, a vendor (not **********s) that carries AFE intakes told me that the closed system likely produces less hp than the open intakes but is less prone to heat soak.

Of course, I've never understood how an air filter has enough thermal mass/density to suffer from heat soak.

And, as previously discussed, the additional heat produced by an intake charge that includes heated air from the engine compartment is probably extremely small and may, in fact, be completely offset by the increased efficiency of turbochargers that work less hard to suck in air.

Neil
It's more of the rising engine heat the open cones should worry about, not heat soak.

The closed AFE intake can better deal with the type of heat mentioned above.
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      01-03-2012, 08:20 PM   #15
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Its a trade off higher temps higher flow vs lower temps lower flow... which would yield more power? Its an endless debate... how much power is lost as temps increase? How much power is lost as flow is restricted? Where is the ideal middle ground?
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      01-03-2012, 09:44 PM   #16
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Quote:
Originally Posted by Papethova View Post
Its a trade off higher temps higher flow vs lower temps lower flow... which would yield more power? Its an endless debate... how much power is lost as temps increase? How much power is lost as flow is restricted? Where is the ideal middle ground?
GIAC actually did a test back in 2009/2010 with their stage 2 and all supporting hardware(intake, fmic, dp's...etc) on our RTA 335i, there is no difference in power with the AFE closed(single cone) intake and no intake at all. That tells us there is little or no restriction with the AFE closed intake. No test was conducted on the open dual cone intake though.

Stock intake is good for stock boost levels. At GIAC stage 1 the stock intake has become a restriction.
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      01-03-2012, 10:42 PM   #17
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Informative thread.. The mods should merge this one and several others to create an Intake Thread sticky at the top.
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      01-03-2012, 11:35 PM   #18
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Quote:
Originally Posted by EINSER M View Post
after reading about this for 3 days and gathering info from posts, battles and bla blas im going with the AFE stage II w/ heat shield setup tomorrow w/ **********s.
done today @ **********s w/ new DVs

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      01-04-2012, 12:00 AM   #19
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Please post video and impressions

Hey Einser,
Please post a video clip of the engine sound and your impression if there is an increase in power....when you get a chance.

Thanks!!!
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      01-04-2012, 01:52 AM   #20
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Quote:
Originally Posted by HP Autowerks View Post
GIAC actually did a test back in 2009/2010 with their stage 2 and all supporting hardware(intake, fmic, dp's...etc) on our RTA 335i, there is no difference in power with the AFE closed(single cone) intake and no intake at all. That tells us there is little or no restriction with the AFE closed intake. No test was conducted on the open dual cone intake though.

Stock intake is good for stock boost levels. At GIAC stage 1 the stock intake has become a restriction.
No intake at all? Cant you also interpret that as there is no loss of power with sucking in hot air from the engine bay (at the flow rates that no intake provides)?
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      01-04-2012, 02:03 AM   #21
EINSER M
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Quote:
Originally Posted by 1swift1 View Post
Hey Einser,
Please post a video clip of the engine sound and your impression if there is an increase in power....when you get a chance.

Thanks!!!
will do. tomorrow night on the way to the gym with my co-pilot.
with the AFE and the DVs it feels even more sure footed and quick between shifts. you hear the turbos spool with those DCIs too. the setup was about 900USD installed but worth the bucks imho.
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      01-04-2012, 04:00 PM   #22
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Quote:
Originally Posted by Papethova View Post
No intake at all? Cant you also interpret that as there is no loss of power with sucking in hot air from the engine bay (at the flow rates that no intake provides)?
A fan is place on top of the engine in both cases and all GIAC dyne runs to ensure no rising of heated air.
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