Ok so I found this on the net, does this guy have any clue what he is talking about because I just don't buy it, though maybe someone could enlighten me as to how the AWD stystem works on the Skyline and Evo compared to the STi. Thanks in advance.
"Subura STI AWD system eats up heaps of BHP. Splitting up the power to 4 wheels tends to diminish the amount of it by time it reaches the wheels. Take a look at a Nissan Skyline GTR V Spec 2. They are a 4wd car, but yet they have an advanced 4wd system where the car is a RWD until traction is lost, then power is applied to the front wheels to compensate for traction loss and gain acceleration. And as you will know a Skyline GTR is more expensive and more advanced and more performance than the STI.
Subaru STI is always a 4wd, and can only really distribute its power manually if the driver decides to. I think figures are like (50:50 front:rear, 36:64 Front:Rear).
The only car with fulltime 4wd I would take is the Evo 8. It has more advanced system where each wheel is monitored and power is distributed around all 4 wheels to give best results.
Also, I am not from USA and I have seen how the American version of Evo 8 is around 270bhp. That is a detuned version of Evo due to USA restrictions on cars. The standard Evo 8 comes out with 220kw ( aroudn 298bhp). This used to be 206kw ( 286bhp) with the earlier versions of Evo. The standard Evo 8 would beat an STI, and the Engine cc is around 458 less.
A standard rally car can not be over 2000cc. So unfortunately the 2459cc 300Bhp STI will not be used for rally.
I have an Evo 6.5 ( you can not get in USA ). And I would rather my car to a new STI. Its 14bhp less, and about 200kg ( Do not know that in pounds) less than Evo 8, which is less than a 300bhp STI. Standard Titanium turbo.
Anyway, I done a big spurt out here to let you know that 218hp @ wheels would be correct and Subarus are known to have **** HP at the wheels. And also, I saw some dude said his brother went 160mph. STI has a short ratio gear box, he could not have reached that speed on a standard version."