Actual '11 WRX HP?

joecoolly14 · 11-27-2010, 01:49 PM

Has anyone dynoed theirs? I keep hearing "Oh they rated the HP to the wheels this year. So it really has 3xxhp" The dyno results I have seen have baselines ranging from 219awhp to 240+awhp. Idk maybe its just me but thats a pretty big difference for stock. Those dynos were from the cobb site:

http://accessecu.com/dyno/

Im unaware of any dynos in my general area otherwise id be here posting results lol

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Unabomber · 11-27-2010, 02:49 PM

No one on the planet earth can equate chassis dyno to engine dyno. What it says on subaru.com is the HP rating. What is says on XXXXX dyno is what it says. NEVER the twain shall meet.

mudferret · 11-27-2010, 02:59 PM

Don't worry about the absolute number, look at your baseline number and then compare the after numbers. Dyno #'s are all but useless unless you have a before/after xyz mod. They tell you how much you've gained, or lost. Someone posts results from a lower reading dyno at elevation and everyone tells them their car is broken...

mesarec · 11-27-2010, 05:29 PM

Dyno racing is fun...until you realize you're arguing about numbers that don't mean to much.

Results and driver are what matters. This has all been covered on another thread

joecoolly14 · 11-27-2010, 06:25 PM

I was just interested, I guess ill just wait to dyno after I get some goodies

xluben · 11-27-2010, 09:02 PM

Quote:

Originally Posted by Unabomber

No one on the planet earth can equate chassis dyno to engine dyno. What it says on subaru.com is the HP rating. What is says on XXXXX dyno is what it says. NEVER the twain shall meet.

I agree that a dyno is a tool for seeing the result of a change, not as an end all number machine, but manufacturer ratings aren't worth much more IMO. I don't think there's anything stopping manufacturers from under-rating cars as much as they want. Just for reference here are the results from COBB's baseline dyno runs (as posted on their site):

STI, 2008, 233/253, Barnes, Andrew
STI, 2008, 239/258, COBB Tuning
STI, 2008, 247/245, Hoffman, Aran
STI, 2008, 245/242, Motorsports, Performance
STI, 2008, 236/238, Pickett, Rob
STI, 2009, 243/245, Diens, Tim
STI, 2010, 228/239, COBB Tuning
STI, 2010, 226/240, Pentimonti, Tony
STI, 2011, 236/227, Mitchell, Mario
STI, 2011, 250/254, Pease, Dave
STI, 2011, 251/255, COBB Tuning
STI, 2008+, 239/245, AVERAGE

WRX, 2009, 231/239, Brackenbrough, Mike
WRX, 2009, 241/239, Braun, Jeremy
WRX, 2009, 233/248, Keenan, MJ
WRX, 2010, 244/258, COBB Tuning
WRX, 2010, 244/258, Branen, Charles
WRX, 2010, 246/259, Gill, Evan
WRX, 2011, 223/255, COBB Tuning
WRX, 2011, 251/255, Miller, Josh
WRX, 2011, 218/251, Vonali, Ritter
WRX, 2009+, 237/251, AVERAGE

You can see that even though the STI has a much higher HP and TQ rating than the WRX, they dyno in the same range. Of course there is considerable variation from car to car, but in the end the averages are pretty close. Seems to be a reasonable amount of data to back the assumption that 09+ WRX's are under-rated. Maybe this is just me rationalizing my WRX purchase

Quote:

Originally Posted by joecoolly14

I was just interested, I guess ill just wait to dyno after I get some goodies

This is basically what everyone was telling you not to do. If you don't dyno until after you have your modifications done, then you have nothing to compare it to. The best thing you could do is go to a local dyno and get a baseline pull now. Then you'll have a chart to compare to once you do your mods. If there's more than one shop in town, and you don't know which one you'll use, get a baseline at all of them!

Spieldawg · 11-27-2010, 09:11 PM

The best way to really see the results of any modification, is get your baseline dyno pull.. then when you add parts, hit the dyno again...

But the baseline is the most important.. bone stock.. then let the mod bug bite!

Badmunky · 11-28-2010, 10:52 PM

Thous dyno # posted for the STI and WRX leave out one important factor.
The gear the pull was done in.
The WRX was most likely done in 3rd while the STI was done in 4th.

I have a seen a Cobalt SS S/C that has gearing vary close to the WRX do a pull in 3rd then do one in 4th not 15 min later and show a 35hp loss. Then do another 3rd gear pull and show almost the exact same #s it did on the first pull.

Later.

Ride1226 · 11-29-2010, 12:40 AM

They also have completely different gearing ratios... The STi is always done in 4th because that is one of the longer gears, the wrx in 3rd for the same reason. Should we all just start doing 1st gear dyno pulls so everyone is closest to equal?

xluben · 11-29-2010, 07:55 AM

So a 3rd gear pull on a dyno set up for a 3rd gear will give a different result than a 4th gear pull on a dyno set up for 4th gear?

Ride1226 · 11-29-2010, 10:13 AM

No. Dynos are set up and calibrated for what your gonna use them for.

SWP n Gold · 11-29-2010, 12:54 PM

Dynos are just tools for tuning. Dyno before and after mods to see any increases in whp. Go to the track to see how fast it is.

11-27-2010, 01:49 PM	#1
joecoolly14 Scooby Newbie Member#: 262190 Join Date: Oct 2010 Location: Naples. FL Vehicle: 2011 Wrx DGM	Actual '11 WRX HP? Has anyone dynoed theirs? I keep hearing "Oh they rated the HP to the wheels this year. So it really has 3xxhp" The dyno results I have seen have baselines ranging from 219awhp to 240+awhp. Idk maybe its just me but thats a pretty big difference for stock. Those dynos were from the cobb site: http://accessecu.com/dyno/ Im unaware of any dynos in my general area otherwise id be here posting results lol * Registered users of the site do not see these ads.

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11-27-2010, 02:49 PM	#2
Unabomber Big Ron Moderator Member#: 18062 Join Date: Apr 2002 Chapter/Region: MAIC Location: I can save you a ton of cash Vehicle: on car parts so PM me b4 j00 buy	No one on the planet earth can equate chassis dyno to engine dyno. What it says on subaru.com is the HP rating. What is says on XXXXX dyno is what it says. NEVER the twain shall meet.

11-27-2010, 02:59 PM	#3
mudferret Scooby Newbie Member#: 240688 Join Date: Mar 2010 Chapter/Region: W. Canada Location: Calgary, Alberta Vehicle: 06 WRX	Don't worry about the absolute number, look at your baseline number and then compare the after numbers. Dyno #'s are all but useless unless you have a before/after xyz mod. They tell you how much you've gained, or lost. Someone posts results from a lower reading dyno at elevation and everyone tells them their car is broken...

11-27-2010, 05:29 PM	#4
mesarec Scooby Newbie Member#: 259833 Join Date: Oct 2010 Chapter/Region: NESIC Location: franklin, ma Vehicle: 2011 WRX limited 4dr WRB !!!!	Dyno racing is fun...until you realize you're arguing about numbers that don't mean to much. Results and driver are what matters. This has all been covered on another thread

11-27-2010, 06:25 PM	#5
joecoolly14 Scooby Newbie Member#: 262190 Join Date: Oct 2010 Location: Naples. FL Vehicle: 2011 Wrx DGM	I was just interested, I guess ill just wait to dyno after I get some goodies

11-27-2010, 09:11 PM	#7
Spieldawg Scooby Newbie Member#: 265266 Join Date: Nov 2010	The best way to really see the results of any modification, is get your baseline dyno pull.. then when you add parts, hit the dyno again... But the baseline is the most important.. bone stock.. then let the mod bug bite!

11-28-2010, 10:52 PM	#8
Badmunky NASIOC Supporter Member#: 143391 Join Date: Mar 2007 Chapter/Region: MWSOC Location: Michigan Vehicle: 2007 WRX TR R.I.P Colin! :(	Thous dyno # posted for the STI and WRX leave out one important factor. The gear the pull was done in. The WRX was most likely done in 3rd while the STI was done in 4th. I have a seen a Cobalt SS S/C that has gearing vary close to the WRX do a pull in 3rd then do one in 4th not 15 min later and show a 35hp loss. Then do another 3rd gear pull and show almost the exact same #s it did on the first pull. Later.

11-29-2010, 12:40 AM	#9
Ride1226 Scooby Specialist Member#: 201483 Join Date: Jan 2009 Chapter/Region: SCIC Location: SoCal Vehicle: 2010 WRX WRBM	They also have completely different gearing ratios... The STi is always done in 4th because that is one of the longer gears, the wrx in 3rd for the same reason. Should we all just start doing 1st gear dyno pulls so everyone is closest to equal?

11-29-2010, 07:55 AM	#10
xluben NASIOC Supporter Member#: 261612 Join Date: Oct 2010 Location: Minneapolis, MN Vehicle: 2011 WRX 5 Door NF Performance Stage 1	So a 3rd gear pull on a dyno set up for a 3rd gear will give a different result than a 4th gear pull on a dyno set up for 4th gear?

11-29-2010, 10:13 AM	#11
Ride1226 Scooby Specialist Member#: 201483 Join Date: Jan 2009 Chapter/Region: SCIC Location: SoCal Vehicle: 2010 WRX WRBM	No. Dynos are set up and calibrated for what your gonna use them for.

11-29-2010, 12:54 PM	#12
SWP n Gold Scooby Guru Member#: 110783 Join Date: Mar 2006 Chapter/Region: Tri-State Location: Bethel, CT Vehicle: 2010 WRX Satin White Pearl	Dynos are just tools for tuning. Dyno before and after mods to see any increases in whp. Go to the track to see how fast it is.