E90Post
 


TireRack
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > Custom Autozone N54 DCI



Comment
 
Tutorial Tools Search this Tutorial
USAF Rick's Avatar Custom Autozone N54 DCI
USAF Rick
06-30-2012
What's going on guys.

Okay, so I finally decided that I want to start modding my car, and where else to start but with the intake filters, it's easy and cheap. I like the simple set-up that BMS offers but I wanted one in blue, so I decided to build my own with Autozone parts. Click here to read the entire tutorial
  #66  
By index1489 on 03-19-2013, 02:44 AM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Honestly just read some of my posts, I go out of my way to help random people with there cars all the time, I'm just looking out.

I have been to SB facility personally here in Southern California, read up on there site, watch some of there videos tuning intakes. Filter quality ect.

Most people don't know this but SB makes a lot of filters for a lot of companies out there that get rebranded.

Especially on a turbocharged car, you want the best filter cleaning the air going into your motor, a motor that cost nearly 15k from BMW in a box.






Impressed with the quality of this CAI I recently installed.
Last edited by index1489; 03-19-2013 at 03:00 AM.
Reply With Quote
  #67  
By Wheezy C on 03-19-2013, 10:36 PM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Just my 2 cents... Before we bash companies and their products because it may not be a factory fit application for our cars, know that the items carried at Autozone are the same that are carried at Summit Racing or Jegs which are world renowned distributors. Spectre performance parts including filters are used on their 1.2 million dollar Ferrari F40 and their world record setting 330mph streamliner.

The desire to modify and enhance vehicles by ambitious owners has brought us some of the greatest vehicles in history. Does it sometimes come at a risk? Yes of course but in the end it is your car and your dream. Have fun and work smart.
Last edited by Wheezy C; 03-19-2013 at 11:15 PM.
Reply With Quote
  #68  
By Thedouceman on 05-27-2013, 08:38 AM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Quote:
Originally Posted by Ridehard335 View Post
I decided to make my own as well. I ordered the filters direct from S & B in blue with chrome. I bought the aluminum pipe from Home Depot and polished them with the bench grinder/wire wheel. All said and done it cost me $65.
What schedule aluminum pipe did you use for this? Was it thick or did you find something with smaller side walls?

Also for anyone who has done this mod using PVC, did you use anything besides a worm clamp when connecting the reducer coupling to PVC, because to me it seems like a worm clamp will do nothing on hard PVC like that.
Reply With Quote
  #69  
By BurnmstrJ on 06-05-2013, 07:41 PM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Just to throw some thoughts out there for a fellow Air Force member:

1. When you try to help someone and tell them they are over their head you should understand what you are talking about as well.

2. The n54 engine has 181.8 cubic inches. To calculate how big your intake would need to be to feed this engine you would use the following formula -

A = CID * RPM/20839

A = effective filtering area
CID = cubic inch displacement
RPM = revolutions per minute at maximum power

If you do this correctly, the N54 needs 50.599 square inches of filter to effectively feed the engine.

Now, if the Spectre cone is a 3 inch cone that is 6.7 inches tall you can figure out the square inches by doing length * width. This comes out to be 26.8 per filter. Effectively providing 53.6 sq inches of filter to the engine. This seems like more than is needed doesn't it? Blow the engine? I think not.

Spectre has also sent a car down the salt flats doing 415 MPH with their parts. I dont think they would do that without quality parts.

Sir, your engine will be fine with the filters you have supplied.
Reply With Quote
  #70  
By biz77 on 06-06-2013, 04:46 PM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Quote:
Originally Posted by BurnmstrJ View Post
Just to throw some thoughts out there for a fellow Air Force member:

1. When you try to help someone and tell them they are over their head you should understand what you are talking about as well.

2. The n54 engine has 181.8 cubic inches. To calculate how big your intake would need to be to feed this engine you would use the following formula -

A = CID * RPM/20839

A = effective filtering area
CID = cubic inch displacement
RPM = revolutions per minute at maximum power

If you do this correctly, the N54 needs 50.599 square inches of filter to effectively feed the engine.

Now, if the Spectre cone is a 3 inch cone that is 6.7 inches tall you can figure out the square inches by doing length * width. This comes out to be 26.8 per filter. Effectively providing 53.6 sq inches of filter to the engine. This seems like more than is needed doesn't it? Blow the engine? I think not.

Spectre has also sent a car down the salt flats doing 415 MPH with their parts. I dont think they would do that without quality parts.

Sir, your engine will be fine with the filters you have supplied.
Your formula is incorrect. The N54 utilizes forced induction. The correct formula is:

(Lbs. Boost/14.7) + 1 * CID * RPM/20,839 = filter size in inches squared.
Reply With Quote
  #71  
By Chris_506 on 06-06-2013, 04:47 PM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
i tried this but couldnt find the pcv pipe, anyone has part numbers for further reference?
Reply With Quote
  #72  
By BurnmstrJ on 06-06-2013, 07:17 PM
Member reviews
Difficulty [ 1 = Difficult ]
20%20%20%
1
Cost [ 1 = Expensive ]
20%20%20%
1
DIY Clarity [ 1 = Not clear ]
20%20%20%
1
Average 20%
Quote:
Originally Posted by biz77 View Post
Your formula is incorrect. The N54 utilizes forced induction. The correct formula is:

(Lbs. Boost/14.7) + 1 * CID * RPM/20,839 = filter size in inches squared.
After pluggin in the correct formula we still come with 51.197 inches needed. The filters are still good for a stock application.


This is assuming that you are running stock boost. Which according to his profile, he is not.

Thank you for the correction! Much appreciated.
Last edited by BurnmstrJ; 06-06-2013 at 07:22 PM.
Reply With Quote
  #73  
By e92'D09 on 09-06-2013, 12:24 PM
Curious for everyone to reply too, why hasn't anyone used K & N filters? Are there any issues with these filters or are you guys showing the cheapest costing mod?
Reply With Quote
  #74  
By 1NS0MN1A on 12-09-2013, 04:15 AM
Anyone have issues with the PVC?
Reply With Quote
  #75  
By JayCee335i on 12-31-2013, 06:31 PM
DCI/DIY

Went to BMS and the total was $111 with the shipping.So I did to spectre($55 each/pep boys ) air filters and 2 PVC couplings($4 each home cheapo),total $63 so I save myself $48
I'm just concern in the summer time with hot air going in the engine.
Attached Images
 
Reply With Quote
  #76  
By JayCee335i on 12-31-2013, 06:41 PM
Quote:
Originally Posted by e92'D09
Curious for everyone to reply too, why hasn't anyone used K & N filters? Are there any issues with these filters or are you guys showing the cheapest costing mod?
K&N is the way to go but spectre is a cheaper way.I wanted to do the test with Spectre since it was less expensive,eventually I will replace with K&N filters when the time is do.
Reply With Quote
Comment

Bookmarks

Tutorial Tools Search this Tutorial
Search this Tutorial:

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 -5. The time now is 08:45 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, 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