Login



Post Reply 

Thread Tools  Search this Thread 
02082009, 10:38 PM  #1 
U.S. Marine
23
Rep 186
Posts
Drives: 2008 E92 M3 Coupe (MB Red)
Join Date: Oct 2008
Location: Afghanistan / Camp Lejeune, NC / Boca Raton, FL

Dyno'ed my M3 with and without RPI Air Scoops... results:
Don't have the graphs yet, should have them on Monday but yesterday I dyno'ed my M3 with my new RPI Air Scoops, high powered fans were used and 90mph wind was directed straight into the scoops and front grills. We did a total of 5 pulls just to get consistency and I had 374hp at the wheels BEFORE the scoops and 376hp at the wheels WITH the scoops. So with 90mph of wind the scoops are good for an extra 2hp at the wheels. I don't know where the hell people are getting 14 or 15whp from with the scoops but it's a cheap mod, nice little gain, and the red scoops look awesome behind matte black grills (i'll get pics soon).
FYI, I also have an Evosport pulley, Remus Race exhaust, and BMC air filter so that explains the 376hp as opposed to baseline. 
02082009, 11:18 PM  #4 
yodog
92
Rep 5,036
Posts 
I got 7whp above 7k rpm, and like 15wtq from 2200rpm3700rpm.
__________________
2009 E92 M3  Alpine White  Black Extended  Advan RS  Turner Test Pipes  Dinan AxleBack  OETuning  Eibach Springs  UUC SSK  VRS Front Lip  VRS Type I Diffuser  Matte Black  RPi Scoops  MS Filter  Yokohama AD08  F1 Pinnacle Special Thanks: Gintani  OETuning  eAs 
Appreciate
0

02082009, 11:44 PM  #5 
Major General
182
Rep 6,099
Posts 

Appreciate
0

02082009, 11:45 PM  #6  
Major General
182
Rep 6,099
Posts 
Quote:


Appreciate
0

02082009, 11:59 PM  #8 
U.S. Marine
23
Rep 186
Posts
Drives: 2008 E92 M3 Coupe (MB Red)
Join Date: Oct 2008
Location: Afghanistan / Camp Lejeune, NC / Boca Raton, FL


Appreciate
0

02092009, 12:01 AM  #9 
Banned
41
Rep 2,244
Posts 

Appreciate
0

02092009, 12:03 AM  #10 
Lieutenant General
299
Rep 10,368
Posts 
If you can't test in real world flow conditions you simply CAN NOT judge real world power improvements. That being said the difference between scoops and no scoops being in the noise here is absolutely not a surprise.
Let the great scoop debate begin again in full force.... 
Appreciate
0

02092009, 12:08 AM  #11  
Colonel
36
Rep 2,342
Posts 
Quote:
+1 here we go. I got the scoops, figure it can't hurt.
__________________
E90 ///M3/ AW/ Fox Red 

Appreciate
0

02092009, 12:11 AM  #12  
Banned
41
Rep 2,244
Posts 
Quote:
If a fan that does not produce real world air flow shows gains, the principle is sound. 

Appreciate
0

02092009, 02:09 AM  #13 
I like cars
131
Rep 5,055
Posts 
Let's see gains at all RPM not just peak gains. graphs plz
__________________
My photostream: http://www.flickr.com/photos/racelap/

Appreciate
0

02092009, 02:19 AM  #14 
Banned
41
Rep 2,244
Posts 

Appreciate
0

02092009, 03:04 AM  #15 
Lieutenant General
299
Rep 10,368
Posts 
Sure you can get an idea of how much hp you will gain IN THAT TEST with no real world air flow around the vehicle, which then can be positively correlated with real world hp gains or not, mostly depending on how much the mod in question relies on aerodynamic effects. Of course the intake in most modern/sporty cars relies heavily on aerodynamics as will intake related mods.

Appreciate
0

02092009, 03:15 AM  #16 
Captain
21
Rep 783
Posts 
The only way I can see gains of 10WHP+ is if the intake air temperature is reduced by a reasonable amount (say 10F).
Has anybody measured IATs with and without this mod? 
Appreciate
0

02092009, 03:29 AM  #17 
yodog
92
Rep 5,036
Posts 
__________________
2009 E92 M3  Alpine White  Black Extended  Advan RS  Turner Test Pipes  Dinan AxleBack  OETuning  Eibach Springs  UUC SSK  VRS Front Lip  VRS Type I Diffuser  Matte Black  RPi Scoops  MS Filter  Yokohama AD08  F1 Pinnacle Special Thanks: Gintani  OETuning  eAs 
Appreciate
0

02092009, 06:51 AM  #18 
Captain
21
Rep 783
Posts 
The results are within the normal variances you can see from one run to another run on the dyno...
If you did five runs before and five after and that was the average run, OK there are some gains (and losses around 6500RPM) to be had, but I'm guessing that wasn't the case... 
Appreciate
0

02092009, 09:10 AM  #19 
yodog
92
Rep 5,036
Posts 
This was after like 5 runs.
__________________
2009 E92 M3  Alpine White  Black Extended  Advan RS  Turner Test Pipes  Dinan AxleBack  OETuning  Eibach Springs  UUC SSK  VRS Front Lip  VRS Type I Diffuser  Matte Black  RPi Scoops  MS Filter  Yokohama AD08  F1 Pinnacle Special Thanks: Gintani  OETuning  eAs 
Appreciate
0

02092009, 11:57 AM  #21 
nuh nuh nuh gone
11
Rep 344
Posts 
I agree. I don't think you can duplicate the realworld effects of scoops on a dyno.

Appreciate
0

02092009, 12:03 PM  #22 
Major General
197
Rep 5,363
Posts 
__________________
2016 BMW X5d  Black Sapphire on Terra
2016 Range Rover HSE TD6White on Ivory 2010 Audi R8 V10 Coupe 6MTWhite on Red  gone but not forgotten 
Appreciate
0

Post Reply 
Bookmarks 
Thread Tools  Search this Thread 

