Hi All,
I have just bought a a '98 v5 wrx. It runs nicely and boosts well, however when lightly accelerating with almost no boost the motor surges. The surge is very subtle and doesn't seem to be consistent almost like a very faint pulse of power then not so much power. As soon as I back of or put my foot down it goes away.
Anyone have any ideas as to what could be causing this.
Cheers.