You are a lucky man...
my 2.0i sport used to do 30 tops on a gentle long run and much less if booted or round town...
got even worse with 33's and external cage.
Its only saving grace was that the time I was using it a lot coincided with BP changing their pump colours so the lads at work kept filling the lorries up with unleaded....
I managed to win approx 200 gallons of contam free which was at worst 70% petrol, so I used to run it on 50% from the pump and the rest contam.
Smoked a bit, but ran ok and made the fuel consumption
60mpg on a run and
40 round the town based upon the fuel I had to buy!!
Probably would have killed the cat if hadn't been cut out and fragged when I made its twin side exit exhaust system!
Laters
Gregster