E90Post
 


N54Tuning.com
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > aFe Intake Fix/Solution | Surging & Power Loss Issues Resolved



Reply
 
Thread Tools Search this Thread
      08-18-2011, 09:26 PM   #1
eNineZero
Private First Class
Canada
20
Rep
132
Posts

 
Drives: 2010 328i xDrive
Join Date: May 2010
Location: Ottawa

iTrader: (3)

Arrow aFe Intake Fix/Solution | Surging & Power Loss Issues Resolved

Hey guys,
I just purchased a used aFe Intake for my 2006 325i Sedan. After installation the intake sounded amazing however the car did not run right. After assembling and disassembling the intake several times and creating my own gasket for the maf I was about to give up. I compared the stock intake and the aFe to find that the MAF sensor sits alot higher up in the intake tube on the factory box.


Issues: I experienced a huge loss in power between 4000-6000rpm, and very evident engine surging (power for 200 rpms , no power for 200 rpm, power, no power, etc.) throughout the power band at WOT.


Solution: I created a spacer for the MAF out of 1/2 inch MDF board. I also made a gasket out of 1/16 inch thick sheet of rubber to go between the spacer and intake tube. I did not need a gasket for the MAF to spacer since the sensor already has an o-ring, however the hole in the spacer must be perfect for the MAF to stay sealed. Longer bolts (extra 1/2 inch) had to be sourced.

Here is a diagram:





Outcome: The car now runs perfect, cannot feel the slightest stutter, power seems to be good and engine revs smoothly regardless of throttle input.


I am glad I decided to try this instead of giving up, as this is the best sounding intake I have heard for the E90/E92. I hope this can help solve some of the other members issues with this intake since research showed there is quite a bit of you with similar problems.
Appreciate 0
      08-19-2011, 12:18 AM   #2
tamster00
Uhh, Hi =)
United_States
2
Rep
279
Posts

 
Drives: 11' E90 335i, 12' Fit Sport
Join Date: Apr 2011
Location: Daly City

iTrader: (2)

Send a message via MSN to tamster00
I was hoping that aluminum heat shield would've been plastic/silicon, that would absorbed less heat and not rob power, good fix though!
__________________
Was - 08' E90 328i|Sparkling Graphite Metallic|AA Tune|Steptronic|Navigation|Comfort Access|Sport|Matte Black Kidneys

Now - 11' E90 335i Performance Edition|Space Gray Metallic|Sport|Premium|Navigation|Steptronic|JB4|E R Charge Pipe|HP Autowerks Foam Filter
Appreciate 0
      08-19-2011, 08:09 AM   #3
eNineZero
Private First Class
Canada
20
Rep
132
Posts

 
Drives: 2010 328i xDrive
Join Date: May 2010
Location: Ottawa

iTrader: (3)

Quote:
Originally Posted by tamster00 View Post
I was hoping that aluminum heat shield would've been plastic/silicon, that would absorbed less heat and not rob power, good fix though!
Thanks! I don't believe that the shield is really robbing any power. I understand that it gets hot, but it does not have enough time to heat up the ambient air with the type of airflow the engine has. Yes, from a stand still or a gentle cruise at low speed I can see how the aFe would ingest some of the underhood air since the shield isn't sealed well, but once the car is moving and at WOT especially if you have some type of scoops it should have no effect on IAT. Remember that on a dyno the car stands still, and those fans are really nothing compared to a car moving at 20+ mph.
Appreciate 0
      08-19-2011, 08:59 AM   #4
MaximusJ
Colonel
MaximusJ's Avatar
Canada
37
Rep
2,122
Posts

 
Drives: 325i 2006
Join Date: Jul 2010
Location: Quebec, Canada

iTrader: (19)

Garage List
'06 E90  [3.72]
Good job! I had the symptoms as you did with that very same intake. But I must admit your symptoms were waaay more present then mine.

I am a bit concerned by the seal between the MDF and the MAF over time and heavy rain / snow conditions; but time will tell!

I just find it ackward that aFe never steped up with this kind of fix. You should contact them and sell them the fixes ;p


Good job on that sir!
Appreciate 0
      08-19-2011, 10:16 AM   #5
eNineZero
Private First Class
Canada
20
Rep
132
Posts

 
Drives: 2010 328i xDrive
Join Date: May 2010
Location: Ottawa

iTrader: (3)

Quote:
Originally Posted by MaximusJ View Post
Good job! I had the symptoms as you did with that very same intake. But I must admit your symptoms were waaay more present then mine.

I am a bit concerned by the seal between the MDF and the MAF over time and heavy rain / snow conditions; but time will tell!

I just find it ackward that aFe never steped up with this kind of fix. You should contact them and sell them the fixes ;p


Good job on that sir!
Thanks. I am planning on getting an aluminum spacer made by a local machine shop. I used MDF board for temporary/test purposes.
Appreciate 0
      08-19-2011, 10:54 AM   #6
shazzy04
Lieutenant Colonel
shazzy04's Avatar
South Korea
19
Rep
1,838
Posts

 
Drives: '15 F22 M235i
Join Date: Jul 2010
Location: South Jersey

iTrader: (6)

Send a message via AIM to shazzy04 Send a message via MSN to shazzy04
Nice fix, I'm going to have to do this on mine

thanks
__________________
2015 M235i - Mineral Gray/Coral Red - Cold Weather/ Technology/Premium Packages

Mods coming soon
Appreciate 0
      10-22-2011, 07:31 PM   #7
soursamo
Lieutenant
soursamo's Avatar
Canada
10
Rep
544
Posts

 
Drives: 2008 335i
Join Date: Dec 2010
Location: BC Canada

iTrader: (13)

I'll be the first to say put me down for one if you decide to get them machined!
Appreciate 0
      10-26-2011, 08:06 PM   #8
krnboy817
Major
krnboy817's Avatar
South Korea
13
Rep
1,012
Posts

 
Drives: 2008 328i coupe
Join Date: Oct 2010
Location: DFW texas

iTrader: (3)

so does this mean that this intake creates hp gains and no hp loss like most people say this intake tends to do?
__________________

driving is poetry in motion.
Appreciate 0
      10-28-2011, 02:48 PM   #9
arctic330i
Lieutenant Colonel
arctic330i's Avatar
United_States
48
Rep
1,928
Posts

 
Drives: F15 35i
Join Date: Aug 2010
Location: Gainesville, Fl

iTrader: (8)

Garage List
2014 BMW X5  [0.00]
2006 BMW 330i E90  [4.04]
2013 BMW 335is  [5.00]
Very interesting... I sold mine because of this issue. Once I hear this is a true fix I will have to look into it for sure!
__________________
See my full mod list in my garage
Appreciate 0
      10-29-2011, 06:01 AM   #10
berserkerx
Private First Class
berserkerx's Avatar
United_States
2
Rep
164
Posts

 
Drives: 2006 330i
Join Date: Jan 2011
Location: Utah

iTrader: (0)

I am one of the guys who just stuck with a stock air box and a K&N. If this is a real fix I may make the jump. But I am guessing this intake still suffers from heat soak?
Appreciate 0
      10-29-2011, 02:23 PM   #11
krnboy817
Major
krnboy817's Avatar
South Korea
13
Rep
1,012
Posts

 
Drives: 2008 328i coupe
Join Date: Oct 2010
Location: DFW texas

iTrader: (3)

Quote:
Originally Posted by berserkerx View Post
I am one of the guys who just stuck with a stock air box and a K&N. If this is a real fix I may make the jump. But I am guessing this intake still suffers from heat soak?
the theory is that the ambiant heat surrounding the intake isn't effecting the incoming air since the cooler air going into the intake is moving at a certain rate where at that rate, there is just not enough time for heat to be infused to make the air rise in temp.

this is true to a point but a lot of factors play a role to make this true. and one thing off the back that doesnt make it true for afe heat shield is that its paper thin aluminum, which over a certain period of time of exposure to heat it will be something that will transfer heat (metal holds heat and radiates the heat it holds.)

my other argument is in a tightly enclosed case this theory is possible but that heat shield isn't something that you can call tightly enclose space. and although the ambient heat my not transfer to the cooler air, but the hot air that is already infused with heat may leak into the very area the heat shield is supposed to create.

so for a stock intake box the theory can be applied, since it creates a tightly sealed enclosed space. but it cannot be applied to AFE heat shield since it does not create this encasement. and im sure there is a reason why BMW made the intake box casing material as thick as it is.

so the only way for AFE to be effective is when the out side temp is low enough to offset even after all the heat factors are added and still have the temp of the incoming air cooler than what stock box can hold.
__________________

driving is poetry in motion.
Appreciate 0
      10-30-2011, 07:12 AM   #12
berserkerx
Private First Class
berserkerx's Avatar
United_States
2
Rep
164
Posts

 
Drives: 2006 330i
Join Date: Jan 2011
Location: Utah

iTrader: (0)

Quote:
Originally Posted by krnboy817 View Post
the theory is that the ambiant heat surrounding the intake isn't effecting the incoming air since the cooler air going into the intake is moving at a certain rate where at that rate, there is just not enough time for heat to be infused to make the air rise in temp.

this is true to a point but a lot of factors play a role to make this true. and one thing off the back that doesnt make it true for afe heat shield is that its paper thin aluminum, which over a certain period of time of exposure to heat it will be something that will transfer heat (metal holds heat and radiates the heat it holds.)

my other argument is in a tightly enclosed case this theory is possible but that heat shield isn't something that you can call tightly enclose space. and although the ambient heat my not transfer to the cooler air, but the hot air that is already infused with heat may leak into the very area the heat shield is supposed to create.

so for a stock intake box the theory can be applied, since it creates a tightly sealed enclosed space. but it cannot be applied to AFE heat shield since it does not create this encasement. and im sure there is a reason why BMW made the intake box casing material as thick as it is.

so the only way for AFE to be effective is when the out side temp is low enough to offset even after all the heat factors are added and still have the temp of the incoming air cooler than what stock box can hold.
So are you still saying basically that the stock intake with a K&N is still the best thing for our cars? Maybe I am a skeptic but I have always felt like an intake basically is just there for making noise for a high price.
Appreciate 0
      11-23-2011, 06:41 PM   #13
325xi-06
manifold conversion 325/330
325xi-06's Avatar
Faroe Islands
1
Rep
99
Posts

 
Drives: 325xi 06
Join Date: Nov 2009
Location: Faroe islands

iTrader: (0)

i will have to try this fix also. as my car runs un-smooth :P
Appreciate 0
      11-23-2011, 06:59 PM   #14
RupertPupkin
Lieutenant Colonel
RupertPupkin's Avatar
United_States
24
Rep
1,534
Posts

 
Drives: Freak Beast
Join Date: Aug 2011
Location: East

iTrader: (5)

Quote:
Originally Posted by berserkerx View Post
So are you still saying basically that the stock intake with a K&N is still the best thing for our cars? Maybe I am a skeptic but I have always felt like an intake basically is just there for making noise for a high price.
Just installed the Injen SP1121BLK Intake in my 2006 330i. I have experienced no loss of power, surging, or anything negative at all. It sounds amazing and may have gained some power and responsiveness, but definitely didn't lose any. I have had the car sitting after long drives and then gotten in and there are absolutely no heat soak issues to be noticed.

I'm sure that with a thermometer and a scientific analysis it may be sucking in some warmer air, etc but the real test for me was real world experience and all I can say is it is night an day with the stock airbox.

Couldn't be happier with it.
Appreciate 0
      11-25-2011, 03:58 PM   #15
blazex4
Private First Class
blazex4's Avatar
1
Rep
112
Posts

 
Drives: SGM e90 325i
Join Date: May 2008
Location: New York

iTrader: (2)

Quote:
Originally Posted by jimmydever View Post
Just installed the Injen SP1121BLK Intake in my 2006 330i. I have experienced no loss of power, surging, or anything negative at all. It sounds amazing and may have gained some power and responsiveness, but definitely didn't lose any. I have had the car sitting after long drives and then gotten in and there are absolutely no heat soak issues to be noticed.

I'm sure that with a thermometer and a scientific analysis it may be sucking in some warmer air, etc but the real test for me was real world experience and all I can say is it is night an day with the stock airbox.

Couldn't be happier with it.
Could this fit in the '06 325i?
I've been reading threads about power loss with the afe intakes
Appreciate 0
      11-25-2011, 04:06 PM   #16
RupertPupkin
Lieutenant Colonel
RupertPupkin's Avatar
United_States
24
Rep
1,534
Posts

 
Drives: Freak Beast
Join Date: Aug 2011
Location: East

iTrader: (5)

Quote:
Originally Posted by blazex4 View Post
Could this fit in the '06 325i?
I've been reading threads about power loss with the afe intakes
Yup. Pretty sure its the same part number from Injen. Check their site.

www.injen.com
Appreciate 0
      11-25-2011, 06:02 PM   #17
1QuikWS6
No 55mph
1QuikWS6's Avatar
United_States
70
Rep
4,825
Posts

 
Drives: 09 E92 328iX N51 3-Stage ->M6
Join Date: Jul 2009
Location: Blitzburgh, PA

iTrader: (83)

Garage List
Innovative fix!

But how about everyone just NOT buying AFE intakes?

I see this problem day in & day out on the forum, resulting in quite a few AFE intakes being sold second hand on the forum.

You would think by now that people would simply quit buying the pieces of junk and send AFE a real message...

There are other intakes available
__________________
2009 328ix E92//SGM//ACS Roof Spoiler//MTech Aero Lip+Trunk Spoiler//M3 Side Skirts//CF Roundels+Grilles//M3 Novillo Interior//Perf Shift Lever+Boot//MPerf DCT Wheel//M3 GT3 eBrake Handle+Boot//ACS Pedals//M3 Mirrors//LCI Tails w/LUX Rev//DTEC V7 AE+MTec 6000K D1S+HPB HID 6000K Fogs//HPB LED Interior//RPI Scoops//CF Euro Airbox+Underhood Hsgs//K&N//BMW PE//MTech Rear Bumper-iS Sport Diffuser//CF Strut Brace//Vishnu OFT//BMW 193M's+Kumho 4X
Appreciate 0
      11-25-2011, 07:13 PM   #18
Mwishlist
Private First Class
Mwishlist's Avatar
1
Rep
158
Posts

 
Drives: 2008 328i
Join Date: Jun 2011
Location: United States

iTrader: (0)

Just curious, how did you figure out that the spacer would fix the issue? I would have never thought about that.
__________________
Interviewer: The most exciting moment during the race weekend?
Kimi: I think so it's the race start, always.
Interviewer: The most boring?
Kimi: Now.
Appreciate 0
      11-26-2011, 09:06 AM   #19
eNineZero
Private First Class
Canada
20
Rep
132
Posts

 
Drives: 2010 328i xDrive
Join Date: May 2010
Location: Ottawa

iTrader: (3)

Quote:
Originally Posted by 1QuikWS6 View Post
Innovative fix!

But how about everyone just NOT buying AFE intakes?

I see this problem day in & day out on the forum, resulting in quite a few AFE intakes being sold second hand on the forum.

You would think by now that people would simply quit buying the pieces of junk and send AFE a real message...

There are other intakes available
The AFE Intake is great, but has a design flaw which can be easily fixed. It's also the best sounding intake hands down. The sound part is the selling feature I believe, nobody buys them for power gains.
Appreciate 0
      11-26-2011, 11:54 AM   #20
onephattai
Private First Class
4
Rep
176
Posts

 
Drives: e90
Join Date: Jul 2011
Location: San Jose, CA

iTrader: (0)

Quote:
Originally Posted by eNineZero View Post
The AFE Intake is great, but has a design flaw which can be easily fixed. It's also the best sounding intake hands down. The sound part is the selling feature I believe, nobody buys them for power gains.
yes the sound is awesome but I feel like the intake sound gets a little softer after a few days. I don't know maybe it's just me. My problem with this intake is I don't have power in low rpm, like from 1k to 2.5k. If I apply more gas around these rpm range, then the car will surge which really annoys me. I'm thinking of doing what you did with the gasket. Hopefully it will solve my problem otherwise I'll have to go with something else. On DS mode, the car runs great. Still a little power loss at low rpm but no surging.
to the sound but it comes with a problem
Appreciate 0
      11-26-2011, 12:51 PM   #21
krnboy817
Major
krnboy817's Avatar
South Korea
13
Rep
1,012
Posts

 
Drives: 2008 328i coupe
Join Date: Oct 2010
Location: DFW texas

iTrader: (3)

Quote:
Originally Posted by jimmydever View Post
Just installed the Injen SP1121BLK Intake in my 2006 330i. I have experienced no loss of power, surging, or anything negative at all. It sounds amazing and may have gained some power and responsiveness, but definitely didn't lose any. I have had the car sitting after long drives and then gotten in and there are absolutely no heat soak issues to be noticed.

I'm sure that with a thermometer and a scientific analysis it may be sucking in some warmer air, etc but the real test for me was real world experience and all I can say is it is night an day with the stock airbox.

Couldn't be happier with it.
its because you just spent $200+ and your brain is trying to cope with money wasted by telling your self "there is a gain... there is a gain..." its a placebo effect. its like 200hp civic si feels different perhaps slower/lagging than 200hp gti because its not boosted, but in the end its still 200hp.
__________________

driving is poetry in motion.
Appreciate 0
      11-26-2011, 03:37 PM   #22
RupertPupkin
Lieutenant Colonel
RupertPupkin's Avatar
United_States
24
Rep
1,534
Posts

 
Drives: Freak Beast
Join Date: Aug 2011
Location: East

iTrader: (5)

Quote:
Originally Posted by krnboy817 View Post
its because you just spent $200+ and your brain is trying to cope with money wasted by telling your self "there is a gain... there is a gain..." its a placebo effect. its like 200hp civic si feels different perhaps slower/lagging than 200hp gti because its not boosted, but in the end its still 200hp.
I bought it for sound. I didn't expect gains and don't think there were any. I didn't say it did. I said it sounds great and have no issues especially the power loss everyone talks about. I said it MAY have gained some but even if it did I wouldn't be able to feel it. I've modded many cars before and know what to expect.

Troll
Appreciate 0
Reply

Bookmarks

Tags
afe, issues, power, problems, surging

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 04:53 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