No factory 4 cylinder will ever sound like a high revving F1 motor. Unless Nissan gets really cool and decides to employ cosworth to make the engines LOL! 
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Mazda Rx8 MT Titanium - SOLD!
2009 370Z T-Sport MT Black - Takeda Intake, Swift springs, Rear Camber kit, SS B Lines, FI Exhaust, Z Speed CMAK Flywheel/Clutch Kit, Stillen Brake Cooling.
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