I know you said that you wernt looking for power figures however first you have to detirmin the ammount of power you want to make to determin the right size turbine there is no point in having something that spools up at 1500rpm but you find that it dosent make enough power or the power/boost drops off early.
I hear the hks 2510 is a nice turbo for the 4ag's spools quite early and has the ability to make 180-190 kw atw i think big worm has this turbo and is quite happy with it.
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