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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Apr-29-2017, 07:02:40 AM   #61
HassanEido
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Default Re: Eventuri intake review incl pre/post dyno

well let me share my experience here. I have cams, catless headers ( mods in my sig), but most importantly still using the stock airbox/filter box .
My findings on the dyno were:
-Car will top out at 335 whp with the filter box closed/sealed with the filter in it.
-Car will make the same power with the filter out with the box sealed.
-car will make ~348 with the top hat of the filter box off the bottom half. I crack it open to breathe more ..
So my conclusions were that the air feeds prior to the filter element are a restriction, or not enough. So i drilled out an additional two holes in the bottom half of the box, and routed 2x1.5 inch tubing from the box to the lower grill for cold air.. While I haven't dynoed the car, I can tell you without a shadow of a doubt that it's much better up top. I'll be dynoing soon hopefully will post back results. But my butt dyno usually is accurate. pics below, please excuse the filthy filter box. It's completely stealth, you wouldn't know anything has been added by just looking at the filter box, since the tubes sit underneath it. Intake temps are perfect, on the highway it's practically ambient temp, and driving around the city it's about 10c more than ambient.
Upper Feed:
upperfeed.png
Lower Feed:
bottomfeed.png
__________________

Mods:
-Custom CF airbox
-SSV2 catless headers, Custom 2.5" dual sec1, Custom sec2 2.5" dual with e9xM X pipe, SuperSprint Race inspired custom section 3..
-Cat Cams 280 272.
-Custom dyno tune
-Tms pulleys and electric fan conversion
364.1 whp 287.8 wtq

Custom exhaust thread and dyno http://m3forum.net/m3forum/showthread.php?t=569086
Cams thread and dyno http://m3forum.net/m3forum/showthread.php?t=554439
Custom cf airbox thread http://m3forum.net/m3forum/showthread.php?t=595180

Last edited by HassanEido; Sat, Apr-29-2017 at 07:11:33 AM.
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Old Sun, Apr-30-2017, 10:57:15 PM   #62
M3 dude
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Default Re: Eventuri intake review incl pre/post dyno

that's pretty backyard. props for having a go anyway. guess it just goes back to the question of the purpose of the lower duct..

i still think that csl airbox should be a mafless affair. defeats the purpose otherwise. those that would do it for underbonnet bling alone, well hats off to you...
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Old Mon, May-01-2017, 05:46:40 AM   #63
HassanEido
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Default Re: Eventuri intake review incl pre/post dyno

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Originally Posted by M3 dude View Post
that's pretty backyard. props for having a go anyway. guess it just goes back to the question of the purpose of the lower duct..

i still think that csl airbox should be a mafless affair. defeats the purpose otherwise. those that would do it for underbonnet bling alone, well hats off to you...
I agree . At the end of day you're resrticted to maf opening. I have a gsr box on the way, thought I might as well try it out. Would be intetesting if it made a diff on dyno
__________________

Mods:
-Custom CF airbox
-SSV2 catless headers, Custom 2.5" dual sec1, Custom sec2 2.5" dual with e9xM X pipe, SuperSprint Race inspired custom section 3..
-Cat Cams 280 272.
-Custom dyno tune
-Tms pulleys and electric fan conversion
364.1 whp 287.8 wtq

Custom exhaust thread and dyno http://m3forum.net/m3forum/showthread.php?t=569086
Cams thread and dyno http://m3forum.net/m3forum/showthread.php?t=554439
Custom cf airbox thread http://m3forum.net/m3forum/showthread.php?t=595180
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Old Mon, May-01-2017, 09:12:53 AM   #64
digger
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Default Re: Eventuri intake review incl pre/post dyno

restricting the tube to max of 3.5" would reduce hp by 4 hp and 2 ft-lb compared to the large ~8"opening of the CSL as predicted by a sophisticated engine modelling program.

that isn't very much compromise IMO. there is really only a couple cylinders drawing air through the opening at any given time and the very large volume of the box serves to act as a reservoir smoothing out pulses.
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Old Mon, May-01-2017, 12:30:31 PM   #65
HassanEido
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Default Re: Eventuri intake review incl pre/post dyno

Quote:
Originally Posted by digger View Post
restricting the tube to max of 3.5" would reduce hp by 4 hp and 2 ft-lb compared to the large ~8"opening of the CSL as predicted by a sophisticated engine modelling program.

that isn't very much compromise IMO. there is really only a couple cylinders drawing air through the opening at any given time and the very large volume of the box serves to act as a reservoir smoothing out pulses.
I think it might be due to filter media area not just intake opening restricted to 3.5". I'll dyno with the mod i did to the filter box with and without fitler and see.. if i still gained more hp without a filter then its the larger filter media surface area that gives the csl box its advantage
__________________

Mods:
-Custom CF airbox
-SSV2 catless headers, Custom 2.5" dual sec1, Custom sec2 2.5" dual with e9xM X pipe, SuperSprint Race inspired custom section 3..
-Cat Cams 280 272.
-Custom dyno tune
-Tms pulleys and electric fan conversion
364.1 whp 287.8 wtq

Custom exhaust thread and dyno http://m3forum.net/m3forum/showthread.php?t=569086
Cams thread and dyno http://m3forum.net/m3forum/showthread.php?t=554439
Custom cf airbox thread http://m3forum.net/m3forum/showthread.php?t=595180
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Old Mon, May-01-2017, 12:58:00 PM   #66
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Default Re: Eventuri intake review incl pre/post dyno

Quote:
Originally Posted by HassanEido View Post
I'll dyno with the mod i did to the filter box with and without fitler and see.. if i still gained more hp without a filter then its the larger filter media surface area that gives the csl box its advantage
I believe this has already been done previously in this forum. I can't recall where/when I saw it though.

IIRC - the results were very minimal to no change.
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Old Mon, May-01-2017, 03:13:15 PM   #67
HassanEido
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Default Re: Eventuri intake review incl pre/post dyno

Quote:
Originally Posted by MrCooperS View Post
I believe this has already been done previously in this forum. I can't recall where/when I saw it though.

IIRC - the results were very minimal to no change.
I believe you're reffering to a test I did earlier when my car wasn't cammed. Back then it made zero difference. The thing is, after cams cracking open the filter box made a big difference, like 15 whp's worth.
__________________

Mods:
-Custom CF airbox
-SSV2 catless headers, Custom 2.5" dual sec1, Custom sec2 2.5" dual with e9xM X pipe, SuperSprint Race inspired custom section 3..
-Cat Cams 280 272.
-Custom dyno tune
-Tms pulleys and electric fan conversion
364.1 whp 287.8 wtq

Custom exhaust thread and dyno http://m3forum.net/m3forum/showthread.php?t=569086
Cams thread and dyno http://m3forum.net/m3forum/showthread.php?t=554439
Custom cf airbox thread http://m3forum.net/m3forum/showthread.php?t=595180
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Old Tue, May-23-2017, 09:53:48 PM   #68
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Default Re: Eventuri intake review incl pre/post dyno

Quote:
Originally Posted by HassanEido View Post
I believe you're reffering to a test I did earlier when my car wasn't cammed. Back then it made zero difference. The thing is, after cams cracking open the filter box made a big difference, like 15 whp's worth.
Did you ever have a chance to re-dyno?
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Old Wed, Feb-14-2018, 12:25:29 AM   #69
maynard423
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Default Re: Eventuri intake review incl pre/post dyno

Quote:
Originally Posted by imran@evolve View Post
We are making something to attach the Eventuri to the Evolve Carbon Airbox which will still run a MAF.

Imagine the power gains and noise without the need for Alpha N or update to CSL software/MAP sensor conversion.

Watch this space. :-)


Did this ever ever get made?


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Old Wed, Feb-14-2018, 09:28:10 PM   #70
grke36m3
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Default Re: Eventuri intake review incl pre/post dyno

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Originally Posted by maynard423 View Post
Did this ever ever get made?


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I remember reading this as well a few months back. A nice update would be great from evolve


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Discussing Eventuri intake review incl pre/post dyno in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)