NA engines in general have flatter torque curve and this is especially true for our flat 6 engines. In a track car you want steady power not power spike from hitting boost in big turbo units mounted on little 4-cyl engines. You'll often read about turbo lag on WRXs and they're slow on a tight track because it's hard for them to stay in boost.
Turbo engines also require bit more care than NA engines.
Last edited by ekam; 01-12-2011 at 05:21 AM.
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