the main reason for the gain is that my tuner would not give me more power with the stock pump for obvious reasons, it made more than 280 on the stock pump but for safety reasons power was capped at 280, with a surge tank and 044 he was able to lean on it a bit harder until my turbo let me down, after adding a wastegate and actuator mod it went up to 350 where my butchered modded stock system started holding me back. im going top get a filly sick zorst system fitted soon(from carline at engadine) and add my second fuel pump, twin 044`s on the bottom of the 3.2 litre surge tank and give con a nother go at tuning her up and see what I get.