I would think that even my relatively shorter stroked big bore 748 would be done making power by 10~10.5k. Maybe when Doug tunes it this winter I will find out if that is true. I do recall Doug saying he fitted a large box to a 996 with no real improvement either. So far we've seen two experienced tuners with a methodical scientific approach come up with little improvement, I'd say that makes it an open and shut case. It looks like if you don't run RS rpms, you don't want an RS airbox...
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1997 748
Last edited by CrimsonCloak; 10-15-2009 at 10:52 PM.
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