Originally Posted by EssTeeAai
Can any benefit be achieved from tuning a stock NA Subaru 2.5 motor?
And I don't necessarily mean power gains; how about better fuel mileage?
Or is it a complete waste of time and money?
We've mapped a bunch of them. On premium fuel they make some power, on 87 they are already pulling timing. We can make the drive-ability 100 times better however. Anyone who has gotten it done was very happy with it.