I've had my e60 535d remapped. I'm happy with the results....the car is rapid!!!. I've taken in to a rolling road and it came out at 284 bhp which i thought was a bit low but i imagine the main gains have been in the torque.
my question is what other mods could i make to the car to squeeze a bit more bhp or torque out of it...air filters???...exhaust systems???. I'm not really that experianced with car mods but if there is anyone out there who knows about this i'd be interested to hear what people think i could do / what gains i could expect and how much would it cost??