Originally Posted by Corse-R

I started to break-in the Sti and until now (2 litres of fuel) the engine still needs further break-in. Seen one with the break-in finished (5 litres) and the engine feels more powerful, not much as the stock one but more powerful in all (low, med and high rpms).

I'm using the Sirio pipe (Evo2 pipe) and looks good and very promising. This weekend I'll see if I can finish the break-in and start to lean it as they deserves it.