Dyno Runs--DCI vs OEM air box (Hood Closed)

Mr. 5 · 01-20-2011, 08:52 AM

Quote:

Originally Posted by byoung8

Riddle me this...

The amount of air driving 60+ mph is more than the shop dyno fans blowing into the front grilles? Would a cowl hood help with elleviating hot engine air? With a dci setup, does the stock ram air set up not deliver outside air to the cones?

Ive been a BMW owner for less than 2 months so all these old threads are great bed time reading or even middle of the night bottle feedings for my daughter.

I think I know what you are asking.
Yes, I agree that the air at the shop is not going to be as good as driving but there are a couple points to bring up...
I was using a 70 MPH fan and this was to prove a point.
The best test to do is actual pulls on the road, but I've done that in another thread floating around here.

byoung8 · 01-20-2011, 09:06 AM

Oh ok I'll keep searching. Wouldn't the actual iat be effected by the fmic since that's where the air is entering just before the intake manifold? I just read the N54 engine for dummies sticky. Or is the sensor for iat before the turbos after the cones?

BMWCOUPE · 07-14-2011, 08:58 PM

I read this entire thread and so far from what i understand it is better to keep the stock intake vs a DCI?

I plan to get a JB4 soon(first engine mod, current engine is stock) so would getting the BMS DCI help or hinder the performance both long and short term? I use this car as a daily driver and do a bit of spirited driving no track though. Can someone please help me out on whether I should get a DCI with JB4 or stick with the stock filter.

Thanks

ToadHollow · 07-14-2011, 10:41 PM

Regarding the comparison made here, yes. However, a CAI such as the Ultimate Racing CAI is the best solution for anyone running a tune, period.

BMWCOUPE · 07-14-2011, 10:44 PM

Quote:

Originally Posted by ToadHollow

Regarding the comparison made here, yes. However, a CAI such as the Ultimate Racing CAI is the best solution for anyone running a tune, period.

Can you explain why please? Also will I suffer from sluggish low RPM starts if I get the JB4 with the DCI? Sorry if it's a it of a newbie question but that is currently what I'am

ToadHollow · 07-15-2011, 08:13 AM

More surface space, true cold air flow and engine compartment heat is a nonissue

bahn stormer · 07-15-2011, 01:06 PM

You can also build your own "Mr. 5 Intake" as quite a few members on here have now done, including myself. Best of both worlds.

byoung8 · 07-18-2011, 01:18 PM

Quote:

Originally Posted by bahn stormer

You can also build your own "Mr. 5 Intake" as quite a few members on here have now done, including myself. Best of both worlds.

I'll search a bit later when I'm home, but do you have a link for the build info? I wonder how difficult it'll be.

bahn stormer · 07-18-2011, 03:20 PM

Quote:

Originally Posted by byoung8

I'll search a bit later when I'm home, but do you have a link for the build info? I wonder how difficult it'll be.

I did not think it was hard at all but it's all relative. SyndicateGT made a DIY:

http://www.e90post.com/forums/showthread.php?t=549965

There is a link on the bottom to mine which is similar but external flange (my preference).

Syndicategt · 07-18-2011, 03:40 PM

Quote:

Originally Posted by byoung8

I wonder how difficult it'll be.

It was pretty easy, I'm a pilot and not a mechanic if that means anything, on a scale of 1-10 it was about a 2 or 3. If you can install a piggy back tune or FMIC, you can easily do this. I also found it very fun and rewarding, just take your time with it.

01-20-2011, 09:06 AM	#90
byoung8 Legendary 14 Rep 227 Posts Drives: 2007 335i E90 TiAg Join Date: Sep 2010 Location: San Deigo iTrader: (1)	Oh ok I'll keep searching. Wouldn't the actual iat be effected by the fmic since that's where the air is entering just before the intake manifold? I just read the N54 engine for dummies sticky. Or is the sensor for iat before the turbos after the cones? __________________ '07 335i E90 Titanium Silver
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07-14-2011, 08:58 PM	#91
BMWCOUPE Private First Class 36 Rep 148 Posts Drives: BMW 335i Join Date: Jan 2011 Location: Above the clouds iTrader: (0)	I read this entire thread and so far from what i understand it is better to keep the stock intake vs a DCI? I plan to get a JB4 soon(first engine mod, current engine is stock) so would getting the BMS DCI help or hinder the performance both long and short term? I use this car as a daily driver and do a bit of spirited driving no track though. Can someone please help me out on whether I should get a DCI with JB4 or stick with the stock filter. Thanks
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07-14-2011, 10:41 PM	#92
ToadHollow Once upon a time ...... 276 Rep 5,048 Posts Drives: 2008 JB E92 - SOLD 5/2010 Join Date: Sep 2008 Location: Asti, Italy & Austin, Texas iTrader: (16) Garage List 2008 E92 335i [8.00]	Regarding the comparison made here, yes. However, a CAI such as the Ultimate Racing CAI is the best solution for anyone running a tune, period. __________________
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07-15-2011, 08:13 AM	#94
ToadHollow Once upon a time ...... 276 Rep 5,048 Posts Drives: 2008 JB E92 - SOLD 5/2010 Join Date: Sep 2008 Location: Asti, Italy & Austin, Texas iTrader: (16) Garage List 2008 E92 335i [8.00]	More surface space, true cold air flow and engine compartment heat is a nonissue __________________
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07-15-2011, 01:06 PM	#95
bahn stormer Lieutenant 11 Rep 529 Posts Drives: 07 E90 335i 6MT, 65 MGB Join Date: Feb 2008 Location: PA iTrader: (3)	You can also build your own "Mr. 5 Intake" as quite a few members on here have now done, including myself. Best of both worlds.
	Appreciate 0 Quote