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Originally Posted by Dean
Did I miss anything guys, or any big disagreements in order?
Seat Time
Harness
Tires +1
Sway bars (with adjustable end links, Poltec!)+3
Camber Bolts and alignment
Springs/dampers/coilovers+1
Exhaust (Uppipe, and Turbo back must have Cat!)+4
Brake pads and fluid
Drop in Air Filter
ALK Bushings only
Flash
Underdrive pulley
Engine/pitch mounts
Short throw shifter
Those are the basics, Then... (Order on these is ify)
Did I mention Seat Time?
Camber/Caster Plates
Better springs/dampers/coilovers bump and rebound adjustable
Brakes? (OK, for STX you don't need these, but if you plan to track it, you may.)
Headers
Rear Lateral Links (loose rear camber bolts and plates if used)
CAI?
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After driver skill, nothing is more important than tires IMO. And by far the best mod I made to my car was the rear sway bar, although WRX drivers with a 17 or 20mm bar aren't going to notice the same difference I did coming from a 13mm bar.
I also think the uppipe/exhaust is really important, not just for the +25-30 peak horsepower, but because of how much it broadens the power band, reduces lag, and increases throttle response.
Also, sinc enobody uses a car *strictly* for autocross and competes in ST-X, we also ned to take street performance and trackability into consideration. Personally, I don't think stock WRX brakes even need pads and fluid to autocross, but I wouldn't touch a racetrack without them (in fact I was unwilling to track even my RS until I moved up to 4 pots).