Mazda has unveiled today a modified version of the Mazda3 MPS (Mazdaspeed3 in the U.S.) at the 2007 Sydney Motorshow. The Mazda3 MPS Extreme has received engine, suspension and exhaust upgrades that according to Mazda, improve performance by about 20%. The Mazda3 MPS Extreme's 2.3-litre turbocharged engine has been modified by Mazda Australia Motorsport Manager, Allan Horsley who recalculated the car’s Powertrain Control Module (PCM) raising output by 19 Hp to a total of 281 Hp at 5,300 rpm and maximum torque by 32-lbs-ft to 313.5-lbs/ft (425 Nm) at 4,400 rpm. Other mechanical modifications include a free-flowing two-inch exhaust system and a sports muffler that ensures a "deep-throat" exhaust note.
The Mazda3 MPS Extreme also sits 25mm lower than the standard MPS, giving it a sportier stance. The MPS Extreme is equipped with 19-inch BBS alloy wheels and Dunlop Sports tires (225/35ZR19).
Please read this post with regard to the closing of the Pure-MPS forums. 
