Seems that romraider is a little more realistic.. but it doesn't do this.
That's not my car btw.. I do not have knock like that... :P
that's a n/a 2.5l impreza with an exhaust and I built him a 3in intake from the stock airbox to the TB. I tuned him without the intake.. and it seems that with the new intake he has surpassed the power he can make on 87oct and my timing, or it could be all the fuel drowning out spark now.