All parts were replaced with known good parts. It will die EVERY time at the same MPH, give or take a couple MPH. It feels like a MPH limiter kicks in. It does not matter when you drive the car, how hot the car is, it does what it does without fail every time. Im sure its something simple that we have over looked ,but its giving us hell. *LOL* We have taken the car to around 78-80 MPH in 4th and 5th gear and still does it. He is not a kid that dogs the crap out of his car. He is 48 years old and likes his 240, BUT he is getting to the point that he is ready to give up on it.