Bought a '96 850 Turbo last Fall with about 155 K on her, an upgrade from my previous 93 non turbo (290K) and have put some time and $ into it. For the most part it runs well, had to rebuild the ABS/Tracs
unit with Victor Rocha (excellent service) and some other worn out parts... but here's my question...
I am only getting about 19 miles per US gallon (or 12.1 liters per 100 kms) with this car. I have checked hoses from Turbo and they seem pretty fresh actually like they have already been replaced and I hear no hiss or have any oily mist or anything... also, when I want to accelerate quickly my turbo gauge needle will rise just to the white or 1/2 way line but will not go any higher which leads me to believe I am not getting the performance I should either. The car is responsive but i wouldn't say fast, and I thought they were supposed to be pretty quick. Am pretty sure my girlfriend's V6 '05 Camry would be faster off the line.

My check engine light comes on for a minute at start up then goes out but the Green triangle warning
is on at all times.
I have thought of replacing both upstream and downstream O2 sensors but wanted to see what you guys thought.

I am starting to get both dreaded flashing HVAC lights and also the dread flashing arrow (this is an intermittent occurrence and I can still drive the car ok)
I am obviously in for a DIY treat but Spring will be a better time.... I live in the Great White North.
First things first though... mileage sucks... any suggestions? Thanks