I've been looking for performance ideas for my 1.3L 4 cyl. It runs great but what can we do. I've heard of replacing the chip but I've also heard that it's soldered in to the board.So it's not really replaceable. I know K&N and header probabilities. What do you think of octane bosters or premium gas. There's gotta be something to make the old 1.3 say vroom on the trail. Hi perf coil I dunno what have you tried and how was the outcome. Thanks for your replies.