This may be the wrong forum but i have a 90 model 178 pro sport. Was wondering what type of fuel economy i could expect to get from a 90 merc 150 xr4. The motor runs great no problems. The boats great too just trying to figure out the hack wiring job from previous owner as of last night my gauges are all working again like they should. I also appreciate the comments from you guys on the boat from the pics i posted.