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  #1  
Old 29th June 2007
tranzlucent tranzlucent is offline
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Default 2005 92x Aero vs. 2006 92x aero

Hey there, does anybody have any input on how the 06 and 05 aero's "feel" different? I know the motor is 2.5 instead of a 2.0....

thanks!

tranzlucent
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  #2  
Old 29th June 2007
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SaabScott SaabScott is offline
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The engine did not change in the Saab.

It is based on the WRX version of the car, not the STi.
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  #3  
Old 29th June 2007
tranzlucent tranzlucent is offline
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so the 2005 9-2X Aero and the 2006 9-2X Aero have identical engines?
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  #4  
Old 29th June 2007
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Quote:
Originally Posted by tranzlucent
so the 2005 9-2X Aero and the 2006 9-2X Aero have identical engines?

Yes, just as the Subaru WRX's do.
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  #5  
Old 29th June 2007
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mohooba93 mohooba93 is offline
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Quote:
Originally Posted by SaabScott
Yes, just as the Subaru WRX's do.
no they dont. 05 had the 2.0 and the 06 had the 2.5. i'm pretty sure as i was about to buy one. go to saab92x.com and just see the differences between the 05 aero and 06 aero.


For 2005 the powertrain consisted of the following:

The DOHC turbocharged 2.0 L engine produced 227 hpat 6000 rpm, as well as 217 ft·lbf of torque at 4000 rpm.

For 2006 the powertrain consisted of the following:

The DOHC turbocharged 2.5 L engine produced 230hp at 6000 rpm, 235 ft·lbf of torque at 3600 rpm


as for your question when i test drove the 05 it wasnt as torquey and had a little bit more lag. on the 06 it felt more torquey while it had subtle lag present but noticeably less than the 05.

Last edited by mohooba93; 29th June 2007 at 04:29 PM.
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Old 29th June 2007
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Quote:
Originally Posted by mohooba93
no they dont. 05 had the 2.0 and the 06 had the 2.5. i know i was about to buy one

I stand corrected ... but I'm going to dig further.
I was told that the 2006 model just had the engine tweaked a little more ...
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Old 4th July 2007
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----------------------------------------------------------
2005:

Linear = 2.5L 165HP H4 166 torque @ 4000 RPM
Aero = 2.0L 227HP H4 217 torque @ 4000 RPM

----------------------------------------------------------

2006:

2.5i = 2.5L 173HP H4 166 torque @ 4000 RPM
Aero = 2.5L 230HP H4 235 torque @ 3600 RPM

----------------------------------------------------------

So basically the 2006 Aero has more torque at a lower RPM, and im guessing that it would be more reliable in the long run to pull almost the same HP out of a larger displacement engine

Quote:
Originally Posted by SaabScott
I stand corrected ... but I'm going to dig further.
I was told that the 2006 model just had the engine tweaked a little more ...
Yes, the 2006 just offers two different versions of the 2.5L, no "new" engines were introduced... Essentially the exact same changes subaru made to theirs

I dont believe the STI tune was ever introduces to the wagon models, however....

The 2006 Higher power 2.5L (saab) Has a compression ratio of 8.4:1, while the STI's same basic engine has a ratio of 8.2:1 , so im suspecting reaching near STI levels would reqire little changes to the engine, and would mostly just require the ECU to be tuned, because the compression ratios are so similar.

Last edited by boon94; 4th July 2007 at 08:58 PM.
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Old 7th July 2007
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Quote:
Originally Posted by boon94
The 2006 Higher power 2.5L (saab) Has a compression ratio of 8.4:1, while the STI's same basic engine has a ratio of 8.2:1 , so im suspecting reaching near STI levels would reqire little changes to the engine, and would mostly just require the ECU to be tuned, because the compression ratios are so similar.
To be exact, the EJ25 block is the same but the STi heads are different.
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Old 5th March 2008
drewbroo drewbroo is offline
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sounds closer to a forester 2.5XT engine than a STI engine
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  #10  
Old 12th March 2008
mucky mucky is offline
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Quote:
Originally Posted by boon94


The 2006 Higher power 2.5L (saab) Has a compression ratio of 8.4:1, while the STI's same basic engine has a ratio of 8.2:1 , so im suspecting reaching near STI levels would reqire little changes to the engine, and would mostly just require the ECU to be tuned, because the compression ratios are so similar.
The STi has a much larger turbo. A VF39 to be exact. And although the displacement is the same, I believe the internals on the STi, (the rods, pistons, etc), are different and can handle much more horsepower.
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Old 13th March 2008
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Quote:
Originally Posted by mucky
The STi has a much larger turbo. A VF39 to be exact. And although the displacement is the same, I believe the internals on the STi, (the rods, pistons, etc), are different and can handle much more horsepower.
Just the heads are different.
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  #12  
Old 14th December 2008
Meek Meek is offline
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Quote:
Originally Posted by tranzlucent
Hey there, does anybody have any input on how the 06 and 05 aero's "feel" different? I know the motor is 2.5 instead of a 2.0...
The 2.5 should feel more torquey off idle due the 25% more displacement...
I drove in my brothers 05 the other day and it felt pretty strong for a 2.0. It has some mods and is putting down around 250 to the wheels.
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  #13  
Old 16th December 2008
Double_0_7 Double_0_7 is offline
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Quote:
Originally Posted by drewbroo
sounds closer to a forester 2.5XT engine than a STI engine
this is what i thought too, or the LGT...just as a side question, I thought I heard the rally stuff was capped at 2.0L...how did subaru get around that, do the JDM wrxs and STis still have a 2.0L?
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  #14  
Old 16th December 2008
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Quote:
Originally Posted by Double_0_7
this is what i thought too, or the LGT...just as a side question, I thought I heard the rally stuff was capped at 2.0L...how did subaru get around that, do the JDM wrxs and STis still have a 2.0L?
Yes, JDM STi's have 2.0s AND 2.5s
The cool STI Spec C is a 1.99X.
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