M5POST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   M5POST - BMW M5 Forum > F10 M5 Forum > F10 M5 DIY Guides

Post Reply
 
Thread Tools Search this Thread
      08-25-2014, 04:43 PM   #1
Ray knight
Lieutenant
100
Rep
443
Posts

Drives: Alpine white F10 M5
Join Date: Aug 2014
Location: NE Ohio

iTrader: (1)

So i have a big old hole in the bottom of my airboxes. I've read that the block off plates will improve power but what about the snorkel in the newer cars? I want to have my dealer get me one or the other but which is better? Also, has anyone just duct taped the hole closed instead of spending $300 on factory plates? Or riveted on a piece of plastic?
Appreciate 0
      04-15-2015, 08:19 AM   #2
lfelunden
Banned
lfelunden's Avatar
Germany
46
Rep
648
Posts

Drives: BMW M5 F10
Join Date: Aug 2011
Location: German Autobahn

iTrader: (0)

Garage List
Quote:
Originally Posted by Ray knight
So i have a big old hole in the bottom of my airboxes. I've read that the block off plates will improve power but what about the snorkel in the newer cars? I want to have my dealer get me one or the other but which is better? Also, has anyone just duct taped the hole closed instead of spending $300 on factory plates? Or riveted on a piece of plastic?
+1 on this!!
Appreciate 0
      03-13-2016, 12:52 AM   #3
Rearview
Second Lieutenant
34
Rep
238
Posts

Drives: F10 M5
Join Date: Feb 2016
Location: Midwest USA

iTrader: (0)

Left mine open as i can see evidence of water being sucked in and draining out. Yanked out charcoals.
Appreciate 0
      04-10-2016, 01:04 AM   #4
allmotor_2000
2014 M5 CP: 1/4 Record 9.9s ET / 142.5 MPH
139
Rep
535
Posts

Drives: F10 M5 CP Frozen Gray
Join Date: Jul 2014
Location: Westlake Village, CA

iTrader: (0)

Don't block with plates....
Appreciate 0
      05-04-2016, 10:19 AM   #5
lunden
Private First Class
15
Rep
137
Posts

Drives: BMW M6 F13 800RR
Join Date: Mar 2016
Location: Europe

iTrader: (0)

I blocked it..
Appreciate 0
      05-14-2016, 07:34 PM   #6
TheHouseWon
Lieutenant
83
Rep
495
Posts

Drives: 2013 M5
Join Date: Nov 2015
Location: San Diego

iTrader: (1)

Quote:
Originally Posted by allmotor_2000 View Post
Don't block with plates....
Why not? Because it prevents potential water from draining?

I had snorkels and rid of them, have a hole now. Without the snorkels the spool sound is a bit more evident.
Appreciate 0
      05-24-2016, 05:21 PM   #7
harry007
Private
United Kingdom
4
Rep
93
Posts

Drives: White M5 F10
Join Date: Apr 2010
Location: Solihull, West Midlands

iTrader: (0)

Spool sound maybe better, but using blanking plates is more affective. No heat getting in. Im not sure what water would get it.

Use rpi front scoops and you will get a good flow of air straight to your intakes.

function over image and sound anytime. Were dealing with an almost 600bhp engine. Do it right, do it properly.
Appreciate 0
      06-18-2016, 11:05 AM   #8
edysinger
New Member
0
Rep
8
Posts

Drives: M5
Join Date: May 2016
Location: Augusta, GA

iTrader: (0)

Quote:
Originally Posted by Ray knight View Post
So i have a big old hole in the bottom of my airboxes. I've read that the block off plates will improve power but what about the snorkel in the newer cars? I want to have my dealer get me one or the other but which is better? Also, has anyone just duct taped the hole closed instead of spending $300 on factory plates? Or riveted on a piece of plastic?
I taped mine off as a test after removing the snorkels. I taped inside and outside of the airbox to maximize bonding area. After 2 weeks and a couple of WOT runs i checked on the airboxes and both sides had the tape pulled away on one side of the hole. This would initially seem to me the hole is needed to allow enough airflow (maybe not enough) through the cold air side of the airbox.
Appreciate 0
      06-21-2016, 11:14 PM   #9
ur20v
First Lieutenant
54
Rep
339
Posts

Drives: F10 M5
Join Date: Apr 2016
Location: WA Australia

iTrader: (0)

These have two functions - to stop you swamping the engine in deep puddles and heavy rain also allow additional air flow.

As I have tested temps, in front of the OEM air filter feed pipes by the radiator, in the air box and in the engine bay, you will gain nothing from blanking them - also turbo cars are not as IAT sensitive as NA cars.

Scoops and blanking the air box will do nothing for these engines, changing to a dual cone filter set up will help spool up time and gin some performance once you tune the engine but only in the region of 10 bhp which you won't be able to feel or measure against a stop watch- does get you a bit of turbo spool / induction noise though which might make it worth your investment...
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 09:09 PM.




m5post
m5post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST