E90Post
 


GetBMWParts
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > DIY Twin filter intake set-up



Reply
 
Thread Tools Search this Thread
      10-27-2007, 06:09 PM   #23
Edman951
Second Lieutenant
 
Edman951's Avatar
 
Drives: F10 550xi, Alpine white
Join Date: Nov 2006
Location: Montreal, Quebec

Posts: 285
iTrader: (1)

Funny you should ask, I just finish loading them on youtube.
Not very good video's since i was alone last night when i did this.

I'll try and make more tomorrow.



Edman951 is offline   Canada
0
Reply With Quote
      10-27-2007, 06:20 PM   #24
ulises 335i
these cars waste alot of fucking gas
 
ulises 335i's Avatar
 
Drives: 335i montego blue
Join Date: Jan 2007
Location: el monte, c.a.

Posts: 992
iTrader: (3)

wow it sounds pretty loud!
__________________
e90 335i sport- (with following mods) sstt, afe intake, custom zoomers exhaust , dimisa 4" tips, m6 reps , painted oem front splitter, carbon fiber grill.
ulises 335i is offline  
0
Reply With Quote
      10-27-2007, 06:28 PM   #25
O-cha
Brigadier General
 
O-cha's Avatar
 
Drives: Mcoupe
Join Date: Oct 2007
Location: In front of you

Posts: 4,729
iTrader: (2)

Send a message via AIM to O-cha
Quote:
Originally Posted by Edman951 View Post
O-cha,
Higher temp doesn't always mean less boost post intercooler.
I guess it depend on the cooler's efficiency.
I'm not sure why your putting words in my mouth. I said

Quote:
Originally Posted by O-cha View Post
Keep in mind with a turbo its not as simple as "The intake temps are higher but the intercooler cools the air anyway." Higher intake temps mean the turbos have to spool faster in order to make the same boost post intercooler. So while yes you removed restriction and probably gained some low end torque, you likely will lose HP especially with a tune.
I was simply correcting the posters simple and inaccurate statement of.

Quote:
Originally Posted by Edman951 View Post
Many will say this will take in the hot air from the engine bay. Sure it will, but the intercooler is there to cool the charge after it gets heated by the compresssor.
Since there are many more factors involved. Factors that I detailed in my above post.




But, if you would like to discuss it in depth. With higher intake temps the only other option then less boost would be for temps post IC to be higher, which is obviously bad as well.

Either the turbos spool the same, compress the same volume of hot air which will result in either lower boost at the same temperature or the same boost at higher temperature.

Or, the turbos spool higher, compress a greater volume of air to counteract the above.

The first is bad either way, and the second is bad because the 335s turbos are already heavily spooled and increasing spool for the same variables is obviously not what you want to do.



Now obviously a decrease in restriction will allow a great volume of air for the same amount of spool. The question is was this decrease enough to counteract the increase in temps or lower boost from higher temps. For that a non butt dyno is needed.
O-cha is offline  
0
Reply With Quote
      10-27-2007, 06:50 PM   #26
Edman951
Second Lieutenant
 
Edman951's Avatar
 
Drives: F10 550xi, Alpine white
Join Date: Nov 2006
Location: Montreal, Quebec

Posts: 285
iTrader: (1)

O-cha, not trying to put words in your mouth.

I will not start arguing about temperature vs power output on a turbo car.

We could dyno the same car 30 days staight and it would never make the exact same power or curve. since all temperature variables from each compenent will affect it.
Edman951 is offline   Canada
0
Reply With Quote
      10-27-2007, 07:06 PM   #27
///AFRO
Stage 1 Juice Box - Boosted'
 
///AFRO's Avatar
 
Drives: 07 AW E92-335i TT
Join Date: May 2007
Location: SoCal

Posts: 1,522
iTrader: (0)

Quote:
Originally Posted by Edman951 View Post
O-cha, not trying to put words in your mouth.

I will not start arguing about temperature vs power output on a turbo car.

We could dyno the same car 30 days staight and it would never make the exact same power or curve. since all temperature variables from each compenent will affect it.
Are there any gains? What other performance mods do you have?
__________________

2007 335i -Coupe Alpine White
Mods: JB1 | Exposed Intercooler | Black Grills/Emblems | Golf-Tee Mod | Reflectors | 35% Tints
Next: Aero-Lip | H&R Race Srings | Dual Cone Intake | Straight-Pipes
Soon: 2006 ///M3 Coupe Imola Red - [CSL Project]
///AFRO is offline   Armenia
0
Reply With Quote
      10-27-2007, 08:22 PM   #28
oddjob2021
ASR Turbos+LSD+Meth= :D
 
oddjob2021's Avatar
 
Drives: E92 335i
Join Date: May 2007
Location: Miami, FL

Posts: 1,517
iTrader: (0)

Garage List
2007 E92 335i  [0.00]
Quote:
Originally Posted by Edman951 View Post
Funny you should ask, I just finish loading them on youtube.
Not very good video's since i was alone last night when i did this.

I'll try and make more tomorrow.



wow sounds great!!!! i may have to do something similar! or just get a ram air system from a manufacter like msds or the stett one coming out
__________________

2007 335i Coupe
Mods: Check the Garage
oddjob2021 is offline  
0
Reply With Quote
      10-27-2007, 08:50 PM   #29
seccsc
Second Lieutenant
 
seccsc's Avatar
 
Drives: E90 335i
Join Date: Jun 2006
Location: VA

Posts: 275
iTrader: (0)

I don't mean to get But

Another benefit with this K&N air filter design is the ability to install the OEM Strut Brace.
__________________
seccsc is offline   United_States
0
Reply With Quote
      10-27-2007, 09:33 PM   #30
FinInk
Second Lieutenant
 
Drives: 2000 Celica, Wanting 335i
Join Date: Feb 2007
Location: Fresno

Posts: 291
iTrader: (0)

wow dude, sounds awesome. No cels?
FinInk is offline  
0
Reply With Quote
      10-27-2007, 11:19 PM   #31
L8Apex
Private First Class
 
L8Apex's Avatar
 
Drives: 997 turbo
Join Date: Aug 2007
Location: SoCal

Posts: 168
iTrader: (0)

Good job! Next step is to fabricate a heat shield under the filters. With the cold air blowing on the filters from the stock snorkle it should be just fine at speed.
L8Apex is offline   United_States
0
Reply With Quote
      10-28-2007, 12:08 AM   #32
DrewKo
Lieutenant Colonel
 
DrewKo's Avatar
 
Drives: 335i Montego Blue Saddle Brown
Join Date: Jan 2007
Location: Atlanta, GA

Posts: 1,568
iTrader: (4)

Garage List
2007 335i  [0.00]
Very cool! Sounds good.
DrewKo is offline  
0
Reply With Quote
      10-28-2007, 06:56 AM   #33
SfValley335i
Colonel
 
Drives: Current:135i Sold:335i sedan
Join Date: Mar 2007
Location: City of Angels

Posts: 2,396
iTrader: (8)

Send a message via AIM to SfValley335i
thanks for scraping the project together. over all it looks great. the stock snorkel would keep the bay cool enough.
And the spool sound is so much better... the DP's I've heard didnt make it as loud as your filters did.


The only thing that would worry me is the boost spikes, which could cause problems....
SfValley335i is offline   Afghanistan
0
Reply With Quote
      10-28-2007, 11:48 AM   #34
Orb
Lieutenant Colonel
 
Drives: 335
Join Date: Jun 2006
Location: Canada

Posts: 1,734
iTrader: (1)

Quote:
Originally Posted by Edman951 View Post
Hey guys,
I made a home made twin air filter ( K&N) induction set-up on my car last night.
It came out pretty good and simple.
The idea came to me when thinking of finding a simple way to get a K&N filter on my car. And not ad bends to the system since it already got the long pipes to the turbos.
I figure since I got twin turbo's, why not go twin air filter.
Many will say this will take in the hot air from the engine bay. Sure it will, but the intercooler is there to cool the charge after it gets heated by the compresssor.

On my first test drive i got some boost spike that i never got befoe.
This set up did increase boost buy a good 1 to 2 psi. from before and after reading on my boost gauge.
ps. I have a turbo tuner on my car from the M Shop, That I installed last week.
So if the boost went up just from the filters install that means it remove some restriction right.
And I could always box the filters and use the factory cold air inlet.

The factory box seems restrictive because of it design. and the gain in boost does show this fact.

I was lucky that this set-up went in easy, and that my idea and chossen parts worked. Because I designed this without re-moving any part for the car. Just took mesurements and figured what i needed.

Here what i did and used.
Ordered 2 K&N filters part # RX-3800, I wanted X-stream flow tops. And the 20deg angle help on the install.
http://www.knfilters.com/search/prod...x?Prod=RX-3800

Remover air box. To do this you will have to remove the A/C filter system and bulkhead by unbolting it. This is easly done, and will help you acces the rear intake tube clamp/

I used 2 aluminum 2" IPS ( 2.375" OD) pipes I had at my shop that i cut about 1-1/2" long to joint the filter to the factory pipes.

Then bolt on the filters using the pipe adaptors. angle the filter so the don't tuch each other. Re-intall the bulkhead and A/C filter assembly.

I can now hear the turbos spool up and the bypass valves work (not very load do for the valves) but its descrite.

Here are some pictures.
This is really good work with off the shelf parts. You are not going to get much more than 0.5 PSI pressure drop reduction. From a flow point of view all looks good but added heat in the air stream is another matter but this hard to quantify anyway. I suspect you ahead of the stock system in all circumstances.

Orb
Orb is offline   No_Country
0
Reply With Quote
      10-28-2007, 12:09 PM   #35
fullrev
2011 E92 M3
 
fullrev's Avatar
 
Drives: 2011 E92 M3
Join Date: Apr 2007
Location: New York

Posts: 432
iTrader: (2)

can you post the aluminum pipe that you used?

edit: i'm sorry i didn't see them in the pictures
__________________
2011 E92 M3 6MT
Gone - 2007 E90 335i
fullrev is offline   United_States
0
Reply With Quote
      10-28-2007, 12:54 PM   #36
Mr. 5
Modder Raider
 
Mr. 5's Avatar
 
Drives: M3
Join Date: Apr 2007
Location: Surf City, HB

Posts: 8,626
iTrader: (31)

Garage List
2007 e90 335i  [4.00]
Great job man!
__________________
e36 M3 Coupe, e36 325i Sedan
e90 335i--SOLD

Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
Mr. 5 is offline   Scotland
0
Reply With Quote
      10-28-2007, 01:30 PM   #37
Sniz
Lieutenant General
 
Sniz's Avatar
 
Drives: e92 335 - gone // e36 M3 turbo
Join Date: Mar 2007
Location: Ellicott City, MD

Posts: 10,564
iTrader: (1)

hmmmm be sure to report back if you have any problems with this. Interesting.
__________________
Sniz is offline  
0
Reply With Quote
      10-28-2007, 02:22 PM   #38
sambonator
Samtaro!
 
sambonator's Avatar
 
Drives: a car
Join Date: May 2007
Location: Milky Way Galaxy

Posts: 2,504
iTrader: (5)

Ya great job! Now if only someone can build a proper housing so they will pull cold air, and you'd have a winning product!
__________________
sambonator is offline   United_States
0
Reply With Quote
      06-23-2009, 04:10 PM   #39
TwinTurboXI
Major
 
Drives: 2011 135i
Join Date: Mar 2008
Location: Pittsburgh

Posts: 1,369
iTrader: (9)

Bump for an old thread...

This is basically what a BMS dual cone set up is correct?
TwinTurboXI is offline  
0
Reply With Quote
      06-23-2009, 04:56 PM   #40
ontopofm
Lieutenant Colonel
 
Drives: stock
Join Date: Jun 2007
Location: CA

Posts: 1,548
iTrader: (4)

wow this thread is almost 2 years old and i've never seen it before
ontopofm is offline  
0
Reply With Quote
      06-23-2009, 07:10 PM   #41
skoot3r
BMW n00b
 
skoot3r's Avatar
 
Drives: 09 e92 M3/ 2013 GMC 2500hd
Join Date: Apr 2008
Location: San Jose

Posts: 1,146
iTrader: (4)

Send a message via AIM to skoot3r
Quote:
Originally Posted by TwinTurboXI View Post
Bump for an old thread...

This is basically what a BMS dual cone set up is correct?
yeah but the filters look bigger and don't look like they rub like the BMS set up does
__________________
09 SpaceGray M3 DCT
Power: Dinan 3.62, Gintani Race Mufflers, Dinan Intake, Gintani Xpipe, RPi Scoops
Cosmetic: Vrs Poly-Lip, CSL Trunk, LED Interior Lights, LUX H8, Smoked Tails, Challenge Diffuser
skoot3r is offline   United_States
0
Reply With Quote
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 -5. The time now is 06:03 PM.




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