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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > STETT Performance Cold Air Intake **DETAILED REVIEW**



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      07-23-2012, 09:22 PM   #111
Glowin
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What I find interesting about this intake is that it blocks off the OEM ducting route, and takes the air in instead via a 3" pipe from down in the fog light area.

I can understand the logic behind a Dinan CAI or Mr. 5 setup, where you're adding a second source of cold air (on top of the stock route), but I wouldn't have thought that Stett's single source CAI would have been THAT much better than the OEM's single source CAI (from the kidney grills) with a high flow filter.

Is the OEM ducting THAT restrictive then, what we're saying?
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      07-24-2012, 12:27 PM   #112
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Quote:
Originally Posted by Glowin View Post
What I find interesting about this intake is that it blocks off the OEM ducting route, and takes the air in instead via a 3" pipe from down in the fog light area.

I can understand the logic behind a Dinan CAI or Mr. 5 setup, where you're adding a second source of cold air (on top of the stock route), but I wouldn't have thought that Stett's single source CAI would have been THAT much better than the OEM's single source CAI (from the kidney grills) with a high flow filter.

Is the OEM ducting THAT restrictive then, what we're saying?
This is my main problem with the intakes available. I don't understand why they dont focus on the stock intake more. The dinan setup is exaclty like the Volant intake i had on my g8 and it was way cheaper. I don't understand why companies can't get it together.
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      07-25-2012, 02:32 PM   #113
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Quote:
Originally Posted by fireline43 View Post
This is my main problem with the intakes available. I don't understand why they dont focus on the stock intake more. The dinan setup is exaclty like the Volant intake i had on my g8 and it was way cheaper. I don't understand why companies can't get it together.
The dinan CAI is very well designed. Yes probably a bit overpriced but, if you want quality generally speaking you have to pay for it!

The only thing is that I wish it came in a black only (no carbon fiber) version that probably could be a little cheaper and let the buyer decide.

But as far as design goes Dinan's CAI is on another level, period.
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      07-25-2012, 03:08 PM   #114
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Quote:
Originally Posted by Exterminador View Post
The dinan CAI is very well designed. Yes probably a bit overpriced but, if you want quality generally speaking you have to pay for it!

The only thing is that I wish it came in a black only (no carbon fiber) version that probably could be a little cheaper and let the buyer decide.

But as far as design goes Dinan's CAI is on another level, period.
Honestly, do you have any data whatsoever to support that point of view? WGDC? IAT comparison versus STETT CAI or DCI? Let's try to stick to solid data rather than Dinan FTW!
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      07-25-2012, 04:28 PM   #115
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Quote:
Originally Posted by Glowin View Post
What I find interesting about this intake is that it blocks off the OEM ducting route, and takes the air in instead via a 3" pipe from down in the fog light area.

I can understand the logic behind a Dinan CAI or Mr. 5 setup, where you're adding a second source of cold air (on top of the stock route), but I wouldn't have thought that Stett's single source CAI would have been THAT much better than the OEM's single source CAI (from the kidney grills) with a high flow filter.

Is the OEM ducting THAT restrictive then, what we're saying?
.
.
.
Former Boosted, what are your thoughts on my post?
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      07-25-2012, 05:18 PM   #116
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Quote:
Originally Posted by Glowin;123****8
.
.
.
Former Boosted, what are your thoughts on my post?
I think on a turbo car, ram intake effects are not that beneficial. The stock box is restrictive and that makes using it a futile effort without some sort or add-on like the Mr.5. The problem is the Mr.5 is pulling air from an area that will be pulling hotting air via convection in the engine bay.

The truth is without direct shoutout testing we are speculating on the differences.
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      07-25-2012, 05:31 PM   #117
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One of the effects I've seen from running a ram air intake on my other turbo car is that the optimum fuel and timing will drift and change at higher speeds. For example, lets say the AF ratio and timing are dialed in perfectly at low speeds, then when the car is going faster (I saw the difference begin to appear around 80mph) the turbo becomes more efficient and the AF ratio becomes leaner. Or looking at it in reverse, if the AF ratio is optimized for high speed driving it becomes rich and sluggish at low speeds.
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      07-25-2012, 08:03 PM   #118
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Originally Posted by Gugs View Post
Your data is irrelevant.
Really? Can you let me know where your tuning experience is from?
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      07-25-2012, 08:04 PM   #119
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Quote:
Originally Posted by Former_Boosted_IS View Post
I think on a turbo car, ram intake effects are not that beneficial. The stock box is restrictive and that makes using it a futile effort without some sort or add-on like the Mr.5. The problem is the Mr.5 is pulling air from an area that will be pulling hotting air via convection in the engine bay.

The truth is without direct shoutout testing we are speculating on the differences.
So based on the results, a single 3" pipe flows more than the OEM ducting, right?

As far as where it draws the air from, I thought the Stett also pulls air from the same place as the Mr. 5 though? Their site describes it as "Filter is located in cool location behind bumper not in hot air under hood" Where is that then?
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      07-25-2012, 08:09 PM   #120
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Quote:
Originally Posted by Glowin View Post
So based on the results, a single 3" pipe flows more than the OEM ducting, right?

As far as where it draws the air from, I thought the Stett also pulls air from the same place as the Mr. 5 though? Their site describes it as "Filter is located in cool location behind bumper not in hot air under hood" Where is that then?
This pulls from the fender well. Physics dictates there should be more hot air in the enclosed engine bay near the top via convection. Is it enough to matter? Only testing would tell.

The WGDC are lower on the STETT CAI versus stock and nearly idential to the DCI. This means both the DCI and STETT CAI flow better than the stock box.
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      12-03-2012, 02:51 AM   #121
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Slight old thread revival, but is the difference in IATs large enuff to warrant the almost $300 difference?
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      07-02-2014, 09:48 AM   #122
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Thread Bump,

Does anyone have the DIY for this?

It seems pretty explanatory as one V pipe connects where the two hoses for the factory airbox are present and the filter sits somewhere near the drivers side tire, but I'm not sure how/where to guide the piping from the engine cabin down there.

Any from above pictures of info would be appreciated since all the OP pictures have long expired.
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      08-23-2019, 06:58 PM   #123
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Anyone install this on a lowered car, or an 335IS? It sits so much in the wheel well that my lowered car wheel touches the pipe and won't be drivable.

Definitely will require much fabrication to have it be 2" more inside the engine bay.
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      08-27-2019, 12:30 AM   #124
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Figured it out, had to remove the drivers side structural brace and pull it far forward.
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