Im guessing this has been asking 1000 times before are there any worthwile free mods? Ive just removed all the baffles from the air box. Lucky really as the top one had started to break up so it would have started to get sucked up into the engine.
Also the top of the airbox has an extra box coming off of it? Whats this for?
Its an e36 compact 1.9 2000reg with the plastic manifold.