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



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      01-20-2011, 09:52 AM   #89
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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.
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      01-20-2011, 10:06 AM   #90
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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?
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      07-14-2011, 08:58 PM   #91
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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
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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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      07-14-2011, 10:44 PM   #93
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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
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      07-15-2011, 08:13 AM   #94
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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
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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.
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      07-18-2011, 01:18 PM   #96
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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.
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      07-18-2011, 03:20 PM   #97
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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).
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      07-18-2011, 03:40 PM   #98
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Quote:
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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.
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