Keep stock airbox or install DCI/CAI?

Tuner1984 · 05-31-2011, 10:05 PM

I'm torn between running my current setup of the stock airbox with k&n drop in and cyba scoops, or going back to dci. DCI the throttle response is better, but the ambient temps seem cooler with the stock airbox. My mods are currently Cobb, Helix IC, Forged DV's. I'd like a Dinan intake, Simota, or the new AFE closed airbox, but I can't see spending that much money on the intake. A buddy of my mine actually ran faster at the track with Cobb, ETS IC, and stock airbox then with DCIs.

tibra1 · 05-31-2011, 11:11 PM

Guy selling a brand new Simota here

http://www.e90post.com/forums/showthread.php?t=538306

400 plus shipping not bad for carbon fiber intake

M3 Eater · 05-31-2011, 11:57 PM

cobb has a 14 psi limit right??? 15psi is where the dci really begins to shine. Cobb is really made for stock and mildly modified cars. Its a great tune an I believe that it could run faster with the stock box than another manufactures DCI. Add meth and the DCI gets even more effective and the stock box begins to choke out.

Charleston335 · 06-01-2011, 09:13 AM

Quote:

Originally Posted by tibra1

Yeah thats prolly true ..all the race guys address ducting and funnelling to channel cool air in and heat out..but it must be noisy as hell inside the cabin..LOL

Its actually quiet but when spooling the turbos sound awesome! Much better than running with the cowl imo

Alan l. · 06-01-2011, 09:56 AM

Quote:

Originally Posted by M3 Eater

cobb has a 14 psi limit right??? 15psi is where the dci really begins to shine. Cobb is really made for stock and mildly modified cars. Its a great tune an I believe that it could run faster with the stock box than another manufactures DCI. Add meth and the DCI gets even more effective and the stock box begins to choke out.

A few of us have seen the cobb boost 14+ in warmer weather so it isn't technically capped at any psi since the tune targets load. It will boost whatever it takes to get to that load.

Tuner1984 · 06-01-2011, 10:31 AM

I have a boost guage and so far my peak has been 15 psi tapering off to 12-13 psi near redline. The Simota is a sexy intake, I just don't want to spend 400 on an intake. I was looking into the new ETS DCI when it comes out. Its larger then the BMS DCI and looks like it could perform better. Still awaiting on when the product will be available.

Imperator · 06-01-2011, 10:59 AM

Quote:

Originally Posted by tibra1

Guy selling a brand new Simota here

http://www.e90post.com/forums/showthread.php?t=538306

400 plus shipping not bad for carbon fiber intake

I looked into the Simota before.... its a great looking intake with a tiny filter. I would not be surprised to find the OEM panel filter offers more pleated surface area.

dicostal · 06-01-2011, 05:01 PM

is one DCI intake much better then the other?

for example the
AFE DUAL CONE INTAKE claims
27 max horsepower, 34lbs. x ft. torque more then stock

but the BMS DCI cliams about
18 HP and like 8 lbs of torque

so are the AFE numbers true?

mithiral67 · 06-01-2011, 05:06 PM

No difference between those claims. I don't believe either.

Elie335 · 06-01-2011, 05:38 PM

Quote:

Originally Posted by dicostal

is one DCI intake much better then the other?

for example the
AFE DUAL CONE INTAKE claims
27 max horsepower, 34lbs. x ft. torque more then stock

but the BMS DCI cliams about
18 HP and like 8 lbs of torque

so are the AFE numbers true?

NO WAY IN THE WORLD an intake alone would give you around 27 HP as claimed up

dicostal · 06-01-2011, 05:55 PM

Quote:

Originally Posted by Elie335

NO WAY IN THE WORLD an intake alone would give you around 27 HP as claimed up

How do they get away with posting false information? it really upsets me

Elie335 · 06-01-2011, 05:58 PM

Quote:

Originally Posted by dicostal

How do they get away with posting false information? it really upsets me

marketing

Alan l. · 06-01-2011, 07:38 PM

Quote:

Originally Posted by dicostal

How do they get away with posting false information? it really upsets me

Common on this platform. Lots of young gullable kids that would believe anything on this forum and buy whatever is the cheapest.

Alan

tibra1 · 06-01-2011, 07:53 PM

Quote:

Originally Posted by Imperator

I looked into the Simota before.... its a great looking intake with a tiny filter. I would not be surprised to find the OEM panel filter offers more pleated surface area.

The Simota filter has much more surface area than the OE filter beacuse the pleats are deeper..and the cone is round tapered..there is no way a panel filter has more surface area.and the OE is paper..super restrictive....here is the k&n equivalent of the simota.

Name: untitled.bmp
Views: 434
Size: 169.7 KB

Name: untitled.bmp
Views: 434
Size: 169.7 KB

Just by looking at pic u can see how much more surface area there is but if u wanna go thru the calcs..

Base Outside Diameter: 7.5 in (191 mm)
Flange Inside Diameter: 6 in (152 mm)
Flange Length: 1 in (25 mm)
Height: 3 in (76 mm)
Top Outside Diameter: 5.875 in (149 mm

Its not as big as DCI..but keep in mind this a forced induction car surface area of cones is not as critical as on an N/A car..and you dont have heat issues as w the DCI..

Tuner1984 · 06-01-2011, 08:40 PM

They probably are using uncorrected numbers instead of SAE corrected. On top of that they dyno these things in perfect conditions setup within their shops for the best numbers possible.

mithiral67 · 06-01-2011, 08:53 PM

Quote:

Originally Posted by Tuner1984

On top of that they dyno these things in perfect conditions setup within their shops for the best numbers possible.

By perfect you mean using 90% thottle vs. 100%?

Elie335 · 06-01-2011, 09:01 PM

tibra1, you're making me get this intake

lol

PM please how much you got it for...

Tuner1984 · 06-01-2011, 09:17 PM

Quote:

Originally Posted by mithiral67

By perfect you mean using 90% thottle vs. 100%?

I mean perfect conditions as in perfect conditions for ambient temps IATs ect.. Places where they can control their environment, control the temp humidity ect.. If you notice when alot of these products are dynoed they are done with ambient temps of like 68-70 degrees with perfect humidity.

Stucks · 06-01-2011, 10:30 PM

Just installed my DCI's tonight. I felt the stock airbox with a drop in filter that I had before, had somewhat more of a torquer feel down low and a more choked feeling up top. The dci's def feel like they are sucking in more air up top with less restriction, which they are. This is better for flow, but the only real downside I see is that my car heats up after some pulls and takes longer to cool down while driving around easy afterward. Its been around 85 degrees at 9:30pm at night here (crazy hot weather lately) and before the dci install, oil temps were sitting around 235-240. After the dci install, I was at around 245-250ish, and that is after driving around for 10 minutes very lightly. My car does have the factory oil cooler, btw.

Tuner1984 · 06-01-2011, 10:43 PM

Yea DCIs are good if your running a higher level of boost. Even without the higher level of boost I felt as though the turbos would spool a little faster, and the throttle response was a little better. I have noticed though since reinstalling the factory box with drop in my temps are a little lower then with the dcis.

tibra1 · 06-01-2011, 11:36 PM

Quote:

Originally Posted by Elie335

tibra1, you're making me get this intake

lol

PM please how much you got it for...

LOL..PM sent

vase330 · 06-01-2011, 11:42 PM

The Dinan CAI is the best one out there, and will out perform the others in all weather conditions. You just have to be willing to sell your first born.

05-31-2011, 10:05 PM	#45
Tuner1984 1 Stock M 76 Rep 1,650 Posts Drives: Something Slow Join Date: Jan 2010 Location: Northern Virginia iTrader: (5) Garage List 2003 E46 M3 [0.00]	I'm torn between running my current setup of the stock airbox with k&n drop in and cyba scoops, or going back to dci. DCI the throttle response is better, but the ambient temps seem cooler with the stock airbox. My mods are currently Cobb, Helix IC, Forged DV's. I'd like a Dinan intake, Simota, or the new AFE closed airbox, but I can't see spending that much money on the intake. A buddy of my mine actually ran faster at the track with Cobb, ETS IC, and stock airbox then with DCIs. __________________ Veteran USMC/Iraqi Freedom Current: E46 M3 Retired: 2009 E90 AW M3 Retired: 2007 E90 AW 335i.
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05-31-2011, 11:11 PM	#46
tibra1 Banned 132 Rep 6,773 Posts Drives: 2011 ZCP M3 - 2007 335i crashd Join Date: Apr 2009 Location: NYC iTrader: (4)	Guy selling a brand new Simota here http://www.e90post.com/forums/showthread.php?t=538306 400 plus shipping not bad for carbon fiber intake
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05-31-2011, 11:57 PM	#47
M3 Eater Major 36 Rep 1,054 Posts Drives: 335i Sedan Join Date: May 2010 Location: Unknown iTrader: (3) Garage List 2007 335i [0.00]	cobb has a 14 psi limit right??? 15psi is where the dci really begins to shine. Cobb is really made for stock and mildly modified cars. Its a great tune an I believe that it could run faster with the stock box than another manufactures DCI. Add meth and the DCI gets even more effective and the stock box begins to choke out. __________________ JB4 beta 15 ohms FSB,AEM inline filter/ CM 10, ETS fmic, ER custom made charge pipe,TSW Donnington 18's,Simitumo HTRZ3, Injen DCI, AR DPs, Forge DVs, AA SLD, Koni FSD, ZSP springs.
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06-01-2011, 10:31 AM	#50
Tuner1984 1 Stock M 76 Rep 1,650 Posts Drives: Something Slow Join Date: Jan 2010 Location: Northern Virginia iTrader: (5) Garage List 2003 E46 M3 [0.00]	I have a boost guage and so far my peak has been 15 psi tapering off to 12-13 psi near redline. The Simota is a sexy intake, I just don't want to spend 400 on an intake. I was looking into the new ETS DCI when it comes out. Its larger then the BMS DCI and looks like it could perform better. Still awaiting on when the product will be available. __________________ Veteran USMC/Iraqi Freedom Current: E46 M3 Retired: 2009 E90 AW M3 Retired: 2007 E90 AW 335i.
	Appreciate 0 Quote

06-01-2011, 05:01 PM	#52
dicostal Lieutenant 55 Rep 495 Posts Drives: 2007 335i Join Date: Jun 2010 Location: Italian in CT - USA iTrader: (0)	is one DCI intake much better then the other? for example the AFE DUAL CONE INTAKE claims 27 max horsepower, 34lbs. x ft. torque more then stock but the BMS DCI cliams about 18 HP and like 8 lbs of torque so are the AFE numbers true?
	Appreciate 0 Quote

06-01-2011, 05:06 PM	#53
mithiral67 That guy 120 Rep 5,740 Posts Drives: 2015 Cayman GTS Join Date: Jun 2008 Location: Chicago Burbs iTrader: (4) Garage List 2015 Porsche Cayman ... [0.00]	No difference between those claims. I don't believe either.
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06-01-2011, 08:40 PM	#59
Tuner1984 1 Stock M 76 Rep 1,650 Posts Drives: Something Slow Join Date: Jan 2010 Location: Northern Virginia iTrader: (5) Garage List 2003 E46 M3 [0.00]	They probably are using uncorrected numbers instead of SAE corrected. On top of that they dyno these things in perfect conditions setup within their shops for the best numbers possible. __________________ Veteran USMC/Iraqi Freedom Current: E46 M3 Retired: 2009 E90 AW M3 Retired: 2007 E90 AW 335i.
	Appreciate 0 Quote

06-01-2011, 09:01 PM	#61
Elie335 ايلي ٣٣٥ هاهاها 88 Rep 1,448 Posts Drives: Vorsteiner e92 Join Date: Jun 2009 Location: Leb iTrader: (1)	tibra1, you're making me get this intake lol PM please how much you got it for... __________________ Recent exterior modifications
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06-01-2011, 10:30 PM	#63
Stucks Lieutenant Colonel 180 Rep 1,911 Posts Drives: 2017 F30 340i Xdrive Join Date: Oct 2010 Location: Montgomery County, MD iTrader: (12)	Just installed my DCI's tonight. I felt the stock airbox with a drop in filter that I had before, had somewhat more of a torquer feel down low and a more choked feeling up top. The dci's def feel like they are sucking in more air up top with less restriction, which they are. This is better for flow, but the only real downside I see is that my car heats up after some pulls and takes longer to cool down while driving around easy afterward. Its been around 85 degrees at 9:30pm at night here (crazy hot weather lately) and before the dci install, oil temps were sitting around 235-240. After the dci install, I was at around 245-250ish, and that is after driving around for 10 minutes very lightly. My car does have the factory oil cooler, btw. __________________ Current: 2017 F30 340i xdrive Previous: 2008 e92 335i coupe: RB turbos, mach 116 race fuel, methanol, alot of boost. Previous: 2003 Honda Accord V6 coupe: AEM V2, zex 75 wet shot (sold)
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06-01-2011, 10:43 PM	#64
Tuner1984 1 Stock M 76 Rep 1,650 Posts Drives: Something Slow Join Date: Jan 2010 Location: Northern Virginia iTrader: (5) Garage List 2003 E46 M3 [0.00]	Yea DCIs are good if your running a higher level of boost. Even without the higher level of boost I felt as though the turbos would spool a little faster, and the throttle response was a little better. I have noticed though since reinstalling the factory box with drop in my temps are a little lower then with the dcis. __________________ Veteran USMC/Iraqi Freedom Current: E46 M3 Retired: 2009 E90 AW M3 Retired: 2007 E90 AW 335i.
	Appreciate 0 Quote

06-01-2011, 11:42 PM	#66
vase330 Colonel 103 Rep 2,760 Posts Drives: 19 E63S; 15.5 RangeRover ATB Join Date: Jan 2007 Location: Arlington, Va iTrader: (1)	The Dinan CAI is the best one out there, and will out perform the others in all weather conditions. You just have to be willing to sell your first born. __________________ E92 335 \| Space Gray \| Saddle Brown Dakota \| Dark Burl Trim \| ZPP \| ZSP \| AT \| Idrive \| 6FL \| FBO \| Dinan CAI \| Quaife LSD \| STG3 PROCede.
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