underdrive pulleys will pay off more than CF stuff. I don't know ZX2 performance mods, but generally speaking they're a great place to start. Why fart can muffler as opposed to just a straight pipe or maybe glasspack/s? Less weight, less cost, less annoyance, and less restriction.
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2001 Prius - 170,000 KM - just got it (no consistent FE numbers yet)
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