Yes. The 2007 Acura TSX uses Honda’s i-VTEC system on its 2.4-liter K-series engine, providing variable valve timing on the intake cam. It does not employ dual VTEC on both cams.
Engine and VTEC configuration
The TSX of this generation relies on the 2.4-liter K-series engine, commonly cited as the K24A2 in US-spec cars. This engine uses i-VTEC, which means the car’s intake cam is controlled by Honda’s electronic system to optimize valve timing and lift across the rev range. In this model, VTEC activity occurs on the intake cam only, while the exhaust cam remains non-VTEC. The setup contributes to a broad, usable torque curve and strong high-RPM performance, with roughly 205 horsepower in typical US-spec versions.
What “i-VTEC” means for the TSX
i-VTEC stands for intelligent VTEC. In the TSX’s K24A2, the system adjusts timing and lift on the intake cam via hydraulic actuators controlled by the engine computer. This allows smoother idle and improved efficiency at low RPMs, while delivering more power as the engine speeds up. Unlike the dual-VTEC setups found in some higher-performance Hondas, the TSX relies on single-cam VTEC behavior and does not activate VTEC on the exhaust cam.
Driving implications and comparison
For drivers, the TSX’s i-VTEC yields a broad power band with a strong mid-range and a respectable top-end, without the more aggressive top-end kick associated with dual-VTEC systems. It’s designed to balance everyday usability with sportier performance. Maintenance remains straightforward, with regular oil changes and using the manufacturer-recommended oil grade helping keep the VTEC components functioning smoothly.
Summary
In essence, the 2007 Acura TSX does have VTEC in the form of i-VTEC, applied to the intake cam of its 2.4-liter K-series engine. It is not a dual-VTEC system; the exhaust cam does not implement VTEC in this model. The result is a car that offers solid power and a broad torque band, paired with the refined, reliable performance characteristic of the TSX lineage.