Acura TL Complete Cold Air Systems Structural rigidity was increased due to the use of high-strength steel in 47.6 percent of the chassis.[6]The base TL is front-wheel drive and is powered by a 3.5-liter V6 that makes 280 hp (210 kW) and 254 ft·lbf (344 N·m) of torque, an increase of 22 hp (16 kW) and 21 ft·lbf (28 N·m) over the previous 3.2-liter V6.[6] The new TL SH-AWD (Super-Handling All-Wheel Drive) replaces the previous TL Type-S and is powered by a 3.7-liter V6 that produces 305 hp (227 kW) and 275 ft·lbf (373 N·m) of torque, an increase of 19 hp (14 kW) and 19 ft·lbf (26 N·m) over the 3.5-liter V6 of the Type-S.[6] The

K&N Complete Cold Air Systems Debuted for the 2009 model year, the Acura TL featured a more aggressive interpretation of Acura's latest styling vocabulary, known as Keen Edge Dynamic.[6] Featured prominently on the front is Acura's controversial Power Plenum upper grille. The size of the car has increased slightly, and as a consequence the wheelbase has been stretched 1.4 inches (36 mm) to 109.3 inches (2,780 mm).[6] The car is also 6.2 inches (160 mm) longer overall, 1.8 inches (46 mm) wider and 0.5-inch (13 mm) taller.[6] Rear legroom improves by 1.3 inches (33 mm) and rear shoulder room increases by 0.5-inch (13 mm).[6]