They run a 5EFE engine mate. Pure economy lol It's just an aftermarket muffler (VROOM) but I do plan on putting a catback system on it (I was quoted $800 Autojoy - is this a good price?) Definately will consider installing a pod filter, or CAI.. Will need to do a bit more research or get some advice from you guys =) I've seen a CAI on a Paseo which was taken from a Honda Accord, looked cool being under the car but wouldn't that get soaked when it rains?? Also, would it be worth getting some aftermarket performance headers? I've had a look at the OBX headers for the Paseo, would they add a bit more power without decreasing fuel efficiency?