Car and Driver Comparo is out
Evolving Member
Joined: Oct 2008
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From: Kelowna, CANADA
On a good dyno that's about right. On a good dyno (ie. one that accurately portrays how much power you're putting down in a real world situation where there's load applied), an STI or an Evo puts down about 220 whp. Since the Ralliart is rated at 235ish, I figured I'd be nice and just take 40 off the above number. It could dyno as low as 160 whp if the 237 is accurate and the tranny eats up the power. A single number is meaningless unless we have a reference in which to frame it.
GO FISH!
The HP figures for the RA are very predictable from the performance numbers. Dyno numbers are great and all, but ultimately track times are what you should use. That is real world. The RA engine is not underrated. From the several sources that have posted drag numbers, the RA is right were Mitsu puts it 235-240 at the crank. You can argue whp all you want but what does it matter? The car runs what it runs. It isn't going to get any faster by hashing 1000 different dyno runs.
Depending on performance sources, the GSR is showing about 272-285 crank HP based on test numbers. That seems low. Of course those early test would be with the poor tune.
Last edited by dboz; Nov 28, 2008 at 05:34 PM.
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Ok i found it. DSport magazine @ XS Engineering using a Dynamic DTS Dynamometer:
Baseline: 222.1 WHP, 230.3 LB-FT TQ
Eneos Synthetic Oil: 226.5 WHP, 233.8 LB-FT TQ
Sun Auto Hyper Ground Cables: 228.6 WHP, 236.6 LB-FT TQ
Greddy SE Exhaust: 232.3 WHP, 236.8 LB-FT TQ
This might not be amby's almighty Real world dyno but these are the numbers they got. From the picture it looks like the Dyno is outside but they didn't say the temperature.
Baseline: 222.1 WHP, 230.3 LB-FT TQ
Eneos Synthetic Oil: 226.5 WHP, 233.8 LB-FT TQ
Sun Auto Hyper Ground Cables: 228.6 WHP, 236.6 LB-FT TQ
Greddy SE Exhaust: 232.3 WHP, 236.8 LB-FT TQ
This might not be amby's almighty Real world dyno but these are the numbers they got. From the picture it looks like the Dyno is outside but they didn't say the temperature.
Ok i found it. DSport magazine @ XS Engineering using a Dynamic DTS Dynamometer:
Baseline: 222.1 WHP, 230.3 LB-FT TQ
Eneos Synthetic Oil: 226.5 WHP, 233.8 LB-FT TQ
Sun Auto Hyper Ground Cables: 228.6 WHP, 236.6 LB-FT TQ
Greddy SE Exhaust: 232.3 WHP, 236.8 LB-FT TQ
This might not be amby's almighty Real world dyno but these are the numbers they got. From the picture it looks like the Dyno is outside but they didn't say the temperature.
Baseline: 222.1 WHP, 230.3 LB-FT TQ
Eneos Synthetic Oil: 226.5 WHP, 233.8 LB-FT TQ
Sun Auto Hyper Ground Cables: 228.6 WHP, 236.6 LB-FT TQ
Greddy SE Exhaust: 232.3 WHP, 236.8 LB-FT TQ
This might not be amby's almighty Real world dyno but these are the numbers they got. From the picture it looks like the Dyno is outside but they didn't say the temperature.
Please don't put words in my mouth! I have not suggested any WHP rating, mearly not believing a 33% drivetrain loss is all I"m getting at. Really if the Evo is at the 220whp mark then surely the RA will be much less. How about this then:
EVO rated 291hp crank
RA rated 237 hp crank
237/291 equals 19% difference
Therefor.... as you say and the shop tested; 220whp less 19% equals 193whp for the RA!
Is this a realistic assumption? There! now I've quoted a number! but how would I or anybody else know without REALLY doing a dyno run. Hang on there Amby someone will do it soon and prove your theory !!
EVO rated 291hp crank
RA rated 237 hp crank
237/291 equals 19% difference
Therefor.... as you say and the shop tested; 220whp less 19% equals 193whp for the RA!
Is this a realistic assumption? There! now I've quoted a number! but how would I or anybody else know without REALLY doing a dyno run. Hang on there Amby someone will do it soon and prove your theory !!
You're math is off. What's 237x 0.66 (since 66% of the power makes it to the ground)? It's 160ish. What you did didn't actually take into account the starting value but merely used another value and took a percentage of a percentage.
https://www.evolutionm.net/forums/sh...d.php?t=384286 This might be a sign of things to come.
Evolving Member
Joined: Oct 2008
Posts: 261
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From: Kelowna, CANADA
https://www.evolutionm.net/forums/sh...d.php?t=384286 This might be a sign of things to come.
By the way I just heard the new wrx's only put down 150hp on a dyno! it must be true since I posted in a forum no?
It's amazing what people will believe.
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From: Inbetween Miami and Ft. Lauderdale
Ok hold on Amby. If u got beef with the numbers talk to XS Engineering and Dynamic Dynos. I understand ur point but I did say this might not be ur almighty 'Real World' dyno but it was outside, for all we know it could've been 40 degrees outside but these are the numbers they got.
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From: Inbetween Miami and Ft. Lauderdale
and tetas in my face so it's sleep time 
Evolved Member
Joined: Jul 2008
Posts: 1,264
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From: Calgary, Alberta, Canada
https://www.evolutionm.net/forums/sh...d.php?t=384286 This might be a sign of things to come.
http://forums.nasioc.com/forums/show...487482&page=21
Even a video of the issue on a 2009 for your pleasure.
http://www.youtube.com/watch?v=SvxaR7HSmWc
Cue the excuses lol.
https://www.evolutionm.net/forums/sh...d.php?t=384286 This might be a sign of things to come.