I have the 1.8 too but i have found that fuel economy is really poor as i am running it on hi ocatane (optimax) fuel and have got an induction kit and a straight through exhaust and improved performance is very noticeable.

Hey i've only just stumbled on this forumtopic. I have a new tigra as well (1.8 sport version with one or two mods). can try and get a few pics if anyone is interested?