X15 2450 low power high fuel consumption

[Will144]

(11-20-2023 )tree98 Wrote:  The first thing I would do is put the original program back in and see if there's a noticeable difference.

I did ask the dealer if we could just to see if it made a difference. He didn't think they could do that. I do have insite is there a way I could do it? He mentioned going on a drive, recording data, then sending to oem to analyze ( sounds expensive).