'06 WRX performance figures?
10-13-2005, 03:33 AM
#32
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Cobb Tuning has posted preliminary results of dyno testing of a MY06 WRX and has developed Stage 1 and Stage 2 AccessPORT maps (work-in-progress, obviously).
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0==WW==0
"…axles of evil…" - george w. bush
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"…axles of evil…" - george w. bush
10-25-2005, 11:24 AM
#33
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Car Info: 2001 Impreza RS sedan, 1993 Impreza L sedan
On nasioc in the proven power forum someone dyno'd a stock 05 WRX v. a stock 06 WRX. (Nasioc is down right now, otherwise I'd post the results. Gruppe-S did the comparo). The 06 WRX is FAR underrated from the factory... especially in the torque numbers. I read the thread quite a while back but it was a substancial increase over the 2.0L in the WRX.
~~Quentin
~~Quentin
Last edited by quentinberg007; 10-25-2005 at 11:27 AM.
10-27-2005, 12:18 PM
#34
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Join Date: Oct 2005
Location: Vermont
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Car Info: 2006 WRX
I traded in my '02 for an '06 last weekend. I can tell you that 2.5L feels a ton stronger than the 2.0l. The '06 will push you back into the seat pretty good with out waiting for the turbo to kick in. The car is not so much of a turd taking off from a dead stop.
I do believe that the figures that are listed for the car are very conservative. Its really nice being able to step on the gas at any speed/rpm and having the car GO with no waiting!
Jon
I do believe that the figures that are listed for the car are very conservative. Its really nice being able to step on the gas at any speed/rpm and having the car GO with no waiting!
Jon
10-27-2005, 12:53 PM
#35
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Join Date: Jan 2005
Posts: 58
Originally Posted by 05_WRX_420
I haven't taken it past 4K, I still need to break it in(400 miles left). The manuel lists top speed for each gear is:
1st 33 mph
2nd 50
3rd 68
4th 114
I have look at my RPMs through different speeds:
@2500 70 mph in 5th
@3500 90mph in 5th
@4000 104mph in 5th
I plan to mod it as much as I can without any major engine work. I was also checking egine part numbers to see if its the STI block.
WRX 2.5 is EJ255 Redline @6500rpm compression ratio 8.4:1
STI is EJ257 " @7000rpm " " " 8.2:1
I think maybe its just the heads are different. Hopefully someone out there can figure out how to make it rev to 7K like the STI.
1st 33 mph
2nd 50
3rd 68
4th 114
I have look at my RPMs through different speeds:
@2500 70 mph in 5th
@3500 90mph in 5th
@4000 104mph in 5th
I plan to mod it as much as I can without any major engine work. I was also checking egine part numbers to see if its the STI block.
WRX 2.5 is EJ255 Redline @6500rpm compression ratio 8.4:1
STI is EJ257 " @7000rpm " " " 8.2:1
I think maybe its just the heads are different. Hopefully someone out there can figure out how to make it rev to 7K like the STI.
10-27-2005, 08:09 PM
#36
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Originally Posted by 05_WRX_420
The 06 WRX owerners manuel says that top speed in 4th is 114mph, but today I hit 125mph in 4th @6500rpm. I also did some top speed cat & mouse with a 05 STI on the highway today. I kept up with him pretty well considering he has 300HP. I was stock and he had some work done on his STI. After 4K all the action begins! I cant wait to start the mods!
Last edited by herrjr; 11-17-2005 at 01:11 PM.
10-28-2005, 01:15 PM
#37
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Originally Posted by 05_WRX_420
....The manuel lists top speed for each gear is:
1st 33 mph
2nd 50
3rd 68
4th 114
1st 33 mph
2nd 50
3rd 68
4th 114
https://www.i-club.com/forums/showth...ht=redline+mph
10-28-2005, 07:32 PM
#38
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Location: Morgantown, WV
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Car Info: 2001 Impreza RS sedan, 1993 Impreza L sedan
Originally Posted by herrjr
I wonder how well you'd keep up with an 06 STI. Also, it's possible that the driver just kept it in 6th gear. Anyhow, if the underrating is as significant as previous statements suggest, then it significantly reduces the benefit of owning an STI. Especially since the insurance and parts are for it are higher.
~~Quentin
10-31-2005, 10:48 PM
#41
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Join Date: Oct 2005
Location: Cleveland, OH
Posts: 106
Car Info: 05 WRX
I'm kind of surprised that Subaru is focusing more on the 2.5L engine rather than the 2.0. Correct me if I'm wrong, but aren't all JDM Subaru's 2.0s? I don't think that Subaru is abandoning the 2.0L engine. WRC specs only allow turbo'd 2.0L engines. And I think that Subaru acquires a lot of info and engineering from it's rally team to apply to the regular world cars.
I think that that the USDM WRXs get the 2.5L because American's love bigger displacement engines. It's marketing hype. I don't mean to downgrade the new 2.5s. If you've bought one, great. It's got many more improvements than just the engine to the '05. But when you just look at the engine aspect, the '06 only gets an incremental 3hp and modest 18lb-ft of torque increase. They could produced a hotter engine than this if they wanted. In Japan, they have a variety of flavors of the 2.0L engines from mundane to manic. They probably don't have the most torque down low but once you get the turbo spooled it makes up for the difference.
Anyway, that's my $0.02 on this issue. By the way first post. This forum seems to be the most sane and knowledgable of the Subaru forums.
I think that that the USDM WRXs get the 2.5L because American's love bigger displacement engines. It's marketing hype. I don't mean to downgrade the new 2.5s. If you've bought one, great. It's got many more improvements than just the engine to the '05. But when you just look at the engine aspect, the '06 only gets an incremental 3hp and modest 18lb-ft of torque increase. They could produced a hotter engine than this if they wanted. In Japan, they have a variety of flavors of the 2.0L engines from mundane to manic. They probably don't have the most torque down low but once you get the turbo spooled it makes up for the difference.
Anyway, that's my $0.02 on this issue. By the way first post. This forum seems to be the most sane and knowledgable of the Subaru forums.
11-01-2005, 08:34 AM
#42
The 2.5 liter is easier. It's bigger and makes more power. Everyone always forgets how subaru squeezes so much power out of their 2.0 liter in japan. They have high octane. We don't. To overcome this it's much easier to add a half liter.
Also too... that modest if seemingly unimportant 3hp gain and meager 18ftlbs of torque is certainly under-rated. This and the fact that the gearing is different in the wrx 5 speed as opposed to the STI.
The reason? They don't want their 24k mid level performer stepping on the toes of their 33k top level performer.
Regardless of all the other major differences in performance between a wrx and an STI people would only see "Gee a wrx does 0-60 in 5 seconds and the 1/4 in 13.6 - .8 so i'm gonna save myself 9k and get the deal!"
Of course they'd be missing out on all the other benefits of the 9k spent on an STI but you get my point, I hope.
Also too... that modest if seemingly unimportant 3hp gain and meager 18ftlbs of torque is certainly under-rated. This and the fact that the gearing is different in the wrx 5 speed as opposed to the STI.
The reason? They don't want their 24k mid level performer stepping on the toes of their 33k top level performer.
Regardless of all the other major differences in performance between a wrx and an STI people would only see "Gee a wrx does 0-60 in 5 seconds and the 1/4 in 13.6 - .8 so i'm gonna save myself 9k and get the deal!"
Of course they'd be missing out on all the other benefits of the 9k spent on an STI but you get my point, I hope.
11-01-2005, 06:59 PM
#44
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Car Info: 05 WRX
WOW!!! A 20 hp and 30 lb-ft increase at the wheels for the '06. What could account for such a difference from the stated v actual figures? Have driveline losses been minimized on the '06 than the '05?
11-01-2005, 07:52 PM
#45
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We don't know for sure if SOA is using figures from the revised SAE Standard J1349 that was made mandatory since 01-January-2005, unless (from Road & Track) an engine family is unchanged, and if the automaker used the previous J1349, no new bhp certification is necessary. R&T goes on to say that some automakers have opted to re-test their entire engine lineup to conform to the new standards anyway. We could speculate that SOA decided to go with the new test standards when they made a fresh start in the WRX with the EJ25 turbo.
R&T Tech Tidbits article on SAE J1349 and how it may lower the horsepower ratings from Japanese and European manufacturers.
Another article on the revised test standards and how they apply to Japanese and domestic automakers:
Detroit News Autos Insider Asians Oversell Horsepower, although that title should be more appropriately titled "Asian Automakers...".
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0==WW==0
"…axles of evil…" - george w. bush
R&T Tech Tidbits article on SAE J1349 and how it may lower the horsepower ratings from Japanese and European manufacturers.
Another article on the revised test standards and how they apply to Japanese and domestic automakers:
Detroit News Autos Insider Asians Oversell Horsepower, although that title should be more appropriately titled "Asian Automakers...".
--
0==WW==0
"…axles of evil…" - george w. bush
