I bought an early 1.8T back in 1998. I was told by the salesman that it would come with the red I to signify it had the higher power compared to the none turbo version which would have a silver I.
When my car arrived it had the silver I and the salesman then said that they fitted what was available in the factory. I did not worry about it as my car is red and the silver stands out better.
However my son had the car for a few months and he went down the route of locating a red I which is now fitted. Now back in my ownership and I am sure the red I gives an extra 10 bhp!!!!!
Just done 500 miles since yesterday lunch time, the old girl just keeps on going. I had an indicated average 44.5 mpg yesterday over 250 miles. Not quite so good today as it was against the wind. An R -Tech remap helps the mpg as well as smiles per mile!