edit for questions...
The Spacers.
http://www.subaru-svx.net/forum/show...onelic+spacers
The filter is just a green sti filter in my airbox, and it does more for my head than my car.
I
was just listing what I had done.
4.44's will out accelerate a stock svx to 100. and to 150... sometime around 155 I redline, and a stock svx runs outta juice, so it goes.
I also average 25 mpg in winter at 70 mph. The tach is at 3k at the point, and the engine is barely noticeable, going faster adds a pleasant engine purr, that turns into a growl.
Really the gearing the car should have had from the factory. Really becomes a corner eater. The biggest complaint I had before my mods was that the transmission was always playing catchup with the engine, especially coming off the apex in corners.... Now power is always right on, and usually in the gear I would have selected if it were a manual.