evo9 = 8:1 compression (stock boost 18-19psi, but ive found in alot of cases now evo's are only hitting 16psi i think they got detuned in some cases off the boat)
evo 10 = 9:1 compression and they are around 22-24psi stock
also the spool of a 30r chould hit full boost at 42-4300rpm
but on my turbo which is a 30r wheel shoved in a stock evo turbo housing will hit full spool at 3800rpm
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**Understeer is when you hit the wall with the front of the car
**Oversteer is when you hit the wall with the rear of the car
**Horsepower is how fast you hit the wall
**Torque is how far you take the wall with you.
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