In spite of its benefits to power, torque and economy, the JTS was not used in the smaller 147 or the larger 166, and much less in other models from the Fiat Group.

This was allegedly because the JTS engine cost a lot more to produce than the Twin Spark.

Applications: The JTS direct injection system was first used in a V6 engine in 2005 with the introduction of the Alfa 159 and Brera.

These modifications include: "TwinPhaser" variable valve timing (cam-phasing on both inlet and exhaust cams, thus the name), gasoline direct injection and a higher compression ratio of 11.25:1.

It also operates with a lean burn system up to about 1500 rpm,[4] as on many other engines from the company and is capable of generating 191 kW (260 PS; 256 hp),[5] a number matching the larger LY7 3.6 L variant used by GM.