From what I've read, it was going into the Honda Accord first. This makes more sense to me since it's a money saver and my thinking is that Accord buyers are more concerned about saving money than Acura buyers. Well this article says otherwise.
"Honda is giving visitors to the Detroit auto show a sneak peek at its future clean diesel engine — on the Acura stand. The i-DTEC, as the engine has been dubbed, is a turbocharged four-cylinder that meets the tough new Tier II Bin 5 emission standards without employing urea injection — a key ingredient in the Mercedes-Benz Bluetec diesel and similar systems.
Instead, the i-DTEC features a unique combustion chamber design and reduced injection time to produce lower emissions, while providing good performance and drivability. Honda would say only that the engine initially will be installed in an unnamed Acura model in 2009. A V6 version of the i-DTEC reportedly is under development and is expected to be widely used in such larger models as the Accord, the MDX, the Odyssey and the Pilot."
"Honda is giving visitors to the Detroit auto show a sneak peek at its future clean diesel engine — on the Acura stand. The i-DTEC, as the engine has been dubbed, is a turbocharged four-cylinder that meets the tough new Tier II Bin 5 emission standards without employing urea injection — a key ingredient in the Mercedes-Benz Bluetec diesel and similar systems.
Instead, the i-DTEC features a unique combustion chamber design and reduced injection time to produce lower emissions, while providing good performance and drivability. Honda would say only that the engine initially will be installed in an unnamed Acura model in 2009. A V6 version of the i-DTEC reportedly is under development and is expected to be widely used in such larger models as the Accord, the MDX, the Odyssey and the Pilot."