Funnily enough, yeah when I boot it it drops quite a bit on the mfd, also takes a while to get up to a decent figure say 30 mpg when driving really steady. This is only going off the mfd would need to do a brim to empty to get a proper reader, but normally the mfd is quite accurate.
I need get it on the rollers, get it tuned properly. Going book in at r-tech at some point.