Problem Roush 427IR on the way to Roush

[twobjshelbys]

Today I got a call from Roush. There is some debate over whether the tune in the engine as delivered is appropriate for a Cobra at this altitude, so they offered to send someone out to tune it. I told them what I'd done and said I would send them the current tune for their comments, but that I believed that we were 90% there. I'm satisfied it is fully operational, I just think a few tweeks wouldn't hurt. First is that the mileage has gone way down. On trips with highway miles (say 80% cruising in 5th) I was getting 20-22MPG. Now I'm getting 12-13MPG. He indicated they could lean it out a little. I need to do a few more controlled tests to verify this.

Other than that, it is running great now. All of the other problems are gone.

I will be towing it to Vegas for the BJ auction (I got a slot in their parade down the strip.) I'll have it out there for the week and should be able to do some low altitude verification.