Ok a bit weird this, but all of a sudden and I have done nothing to it, my car seems a lot faster, and weirdly I am getting an extra 50 miles to a tank.

Got me stumped!

Hope its not the light bulb phenomenom (burns bright then pops!)

 

Someone came during the night and secretly mapped it??????????????????

 

Oh good wish they had left the software too, its an my98 terzo! Those darn mapping fairies!

 

You've found 4th and 5th gear!

 

Oh I see, wondered what those numbers were for on the gearknob........... Still it is the same in any gear, was quick before, but now its LOADS quicker.

 

Get the mass airflow sensor (MAF) checked out.
JohnD

 

Ok so what am I looking for? Low MAF reading?