yeah i would say its a 30-40whp difference from a 9.5:1 motor vs a 10:1 motor all things being equal.
seen it happen. 1.6L 9:1 motors take 18PSI to make 300whp, when another 1.6l at 10:1 takes 14psi to make 300whp. same turbos, same manifold, same exhaust, etc.
lower compression means MORE boost to make the SAME power as a higher compression motor, thats common knowledge.
The head Spoolin has is STOCK, and id love to see why you think its not. BTW who are you again?




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