Re: whats the difference???
The TS engine is a much older design which uses port injection spraying fuel into the intake and then two spark plugs per cylinder to ignite. This came in two performance tunes, 150 bhp in Phase I and 155 bhp in Phase II. Can't remember for sure but possible back to 150 bhp for Phase CF3 (emissions) engines but dunno about that.
The JTS came along in 2002 with a power hike to nearly 165 bhp. The engine has an injector spraying directly into each cylinder and the fuel is ignited by a single spark plug. Supposed to be more efficient but think a lot of people have found that they are quite down on power from spec.