HI i also have a 4afe motor, i have a chip, K & N flat pad filter and a ram tube running to the front bumper from the original air box, for some nice cold air. I also have a stainless steel 57mm exhaust with 41 mm headers and an adjustable fuel pressure regulator. The car is making 78 kw at the wheels. I run with 4AGE 16V I am in South Africa, and TRD parts are very hard to source. I am looking for a TRD intake manifold as well TRD pistons, TRD camshafts(280 intake and 270 exhaust), TRD valves and high revving valve springs. I am planning on installing these parts, once i have gas flowed the head if i can source them otherwise i will have to use local parts. Trying to get about 115 kw at the fly wheel. once that is done i want to put in a 1800 bottom end and see how she runs then.