I have a1988 electra glide w/ 80 cu in carbed engine. It gets 25 mpg

I was in N Y and was riding a dyna glide w/ 80 cu in carbed it gets 40 plus mpg

Could you tell me the size of pi;ot, mid range and high speed jets

I would find out the year of the other and check Main Jet size(Service Manual)
I had an 1100 Magna that came with 118's I believe, and looked to the older years where they had more HP, That year had 135's I believe(been a while), swapped them out, I got the Increase in HP AND Fuel consumption. May just need smaller Mains?