The truth...
No guys, this is absolutely true!!! The dealer told me that I was driving the very last Cummins assembled into a Dodge Ram, a 2000 model. You keep hearing this rumor cause its actually already happened, but Dodge and Cummins are trying to cover it up.
You guys with newer trucks *MUST* be driving around with powerstrokes under the hood, with a different valve cover or something. As for the sound of your post 2000 model trucks, its canned, there's actually a speaker under the hood making that sweet VP-44 & ISB sound. Yamaha and his dealer are spot on!
Yamaha, go back to that dealer and tell that salesman to stay off crack!
- JyRO