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Honda civic 2009 SI: Permormance
197-hp, 2.0-Liter, DOHC i-VTEC® 4-Cylinder Engine
The 2.0-liter, dual-overhead camshaft K20Z3 engine in the Civic Si Sedan produces 197 horsepower at 7800 rpm and 139 lb.-ft. of torque at 6100 rpm. Thanks to special Honda-developed performance technologies, such as the ultra-precise Drive-by-Wire™ throttle system, 3-rocker i-VTEC® variable valve timing, a cold-air intake and high-flow, low-heat exhaust manifold, the K20Z3 engine boasts an impressive flat torque curve from idle, all the way to its race car-like 8000-rpm redline. Plus, the K20Z3’s intake and exhaust system is quieter and less obtrusive when cruising at highway speed, but produces an aggressive, sporty sound at full throttle.
Helical Limited-Slip Differential
Usually found only on high-performance and racing cars, the limited-slip unit helps give the driver more steering control and enhanced steering response when accelerating and cornering.
Close-Ratio 6-Speed Manual Transmission
The performance-oriented close-ratio 6-speed transmission is lightweight and compact, with a quick, precise shift action and solid, direct feel. Special features of this transmission include close gear ratios for first through fifth gears and a low 4.765:1 final drive, for faster acceleration, a stiffer cast-aluminum transmission case for reduced noise, carbon-faced single cone synchronizers on fifth and sixth gears for enhanced shift feel and a low-ratio sixth gear for quieter, more fuel-efficient* highway cruising.
MacPherson Strut Front/Multi-Link Rear Suspension
The geometry of the Civic’s MacPherson strut, and multi-link rear suspension improves responsiveness and feedback that provide a good balance of taut performance and overall ride comfort.
Drive-by-Wire™ Throttle System
Fast-responding electronics take the place of a traditional throttle cable and produce greater response, higher fuel economy* and enhanced drivability with minimum adjustment and maintenance.
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