| al, not sure if this helps, but running a GTT 220 for over a year now, + intercooler for last 6 months, i am sure i have had a progressive reduction in mpg over last few months, i have also noticed a fuel smell as well when pulling out of garage in morning, nothing too drastic,
on the plus side more burbles and pops as well which i had put down to the Milly, but i think on reflection more fuel is going thru [tesco 99 mostly] due a manifold upgrade shortly so might look into state of tune after that | 
