Bimmerfest - BMW Forums

Bimmerfest - BMW Forums (http://www.bimmerfest.com/forums/index.php)
-   F10 / F11 (2011 - Current) (http://www.bimmerfest.com/forums/forumdisplay.php?f=141)
-   -   N55 Intake Idea (http://www.bimmerfest.com/forums/showthread.php?t=648992)

lll F10 lll 09-29-2012 10:37 PM

N55 Intake Idea
 
Anyone have thoughts on doing this for an N55? Im so tempted to try it...so..so.. tempted. But as far as I know the N55 much more sensitive to all changes on the cold side compared to the N54 correct? Input please. Thanks!

http://www.e90post.com/forums/showthread.php?t=349293
http://www.e90post.com/forums/showthread.php?t=549854
http://www.e90post.com/forums/showthread.php?t=333538

Gypsy550i 09-30-2012 04:26 AM

if that works for a F10 550i i will do it with you lol

Needsdecaf 09-30-2012 07:40 AM

1. Why would the N55 be more sensitive to changes on the cold side? And what do you even mean by that?

2. These types of intakes are only beneficial if your turbo is causing negative pressure in the pre-turbo intake while boosting. To see if this will have an effect, you need to do some manometer testing on the intake along several points. Otherwise, all you're doing is marginally cooling down the intake air and letting more sound out.

http://img339.imageshack.us/img339/5549/img0030ao.jpg

This setup is actually pretty stupid. There is no need to add a filter on the end of the secondary intake hose. In fact, you're defeating the purpose of this hose. The hose should ideally face forward in the front of the valence with a scoop to collect air while driving. The idea is to pressurize the airbox with as much air as possible to prevent negative pressure. Adding a filter here is redundant and counter to the original purpose.

Here is a better setup. This was from my Volvo days. Not my pics, but I had a similar setup. Another engineer and I did extensive testing to see gains. Even running a tune with 21 psi of boost, it was less than you would think.

http://img470.imageshack.us/img470/2684/dscn1847tv1.jpg

http://img403.imageshack.us/img403/7595/dscn1848cl3.jpg

lll F10 lll 09-30-2012 04:50 PM

^ I believe the issue is MAP vs MAF.

Also, I know what you mean in terms of the filter bring redundant but I guess it was for the purpose of filtration. You're increasing air intake but retaining the same amount of filtration, so I supposed the guy who made it figured why not stick a filter on it as well. In California, we've been hitting high 90's-100's consistently. Considering it costs less than $30 in materials(if not including the cone filter), I wouldn't mind doing it.

Gypsy550i 09-30-2012 07:16 PM

so the question is....is there anyone in vegas that could do this? And does it have a sound difference

Don Juan 02-20-2014 12:40 PM

Quote:

Originally Posted by Needsdecaf (Post 7104979)

This setup is actually pretty stupid. There is no need to add a filter on the end of the secondary intake hose. In fact, you're defeating the purpose of this hose. The hose should ideally face forward in the front of the valence with a scoop to collect air while driving. The idea is to pressurize the airbox with as much air as possible to prevent negative pressure. Adding a filter here is redundant and counter to the original purpose.

Actually is not redundant . Take a look of the N54 intake. The side where Mr5 attached the hose is the side of where the clean air goes into the Turbos (after the drop in filter) . If he did not add the 2nd filter in the new hose, dirt, debris and whatever elsel will get into the Turbos. The whole idea here is to provide a 2nd source of air to the factory intake. The BMS DCI and Cold air intakes will heat soak rapidly in warm weather areas, defeating the purpose. You could add an intercooler and may help some.
So the idea is great but not sure if I would cut into my airbox. Instead more interested in doing air scoops... anyone ?

hufington 02-21-2014 06:38 AM

Why don't you try the Burger Tuning cold air intake?

http://burgertuning.com/N55_BMW_Performance_intake.html

Don Juan 02-21-2014 09:02 AM

Quote:

Originally Posted by hufington (Post 8160706)
Why don't you try the Burger Tuning cold air intake?

http://burgertuning.com/N55_BMW_Performance_intake.html

The bms is nice but not good for my location. Too hot and it will get heat soaked with the standard intercooler. As soon as the car starts getting hot it starts to minimize any gains. The method above avoids that plus it provides another nostril ( for lack of better words) to suck more cold air.


All times are GMT -7. The time now is 08:10 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms