(Images: Toyota) Toyota recently expanded its recall of the new Tundra’s V6 engines, but there’s a warning for owners of later models. Since its initial launch, there has been concern and disappointment over the new 3.4-liter twin-turbo V6 in the Toyota Tundra. The saga continued last month, when Toyota recalled about 44,000 more trucks to
Chris Mercer/Shutterstock In the late 1960s, Pontiac had some serious V8 engines that ate large amounts of air, what the brand called “ram air” induction. Later Ram Air V8s used a round exhaust port design, allowing more airflow than the standard D-shaped port. However, Pontiac ran into
Dongfeng’s new Mac Power 2.0T hybrid engine has been certified by CATARC Huacheng, reaching a peak thermal efficiency of 45.5%. The engine uses a new MAKC combustion system, 350-bar direct injection and low-pressure EGR to improve efficiency and reduce knocking. Combined upgrades like variable-geometry turbos and low-friction coatings increase its peak efficiency range by about