I just finished my build with the 675rs turbos and dual pop and 740cc injectors and an Ashspec chip... My car pulls really hard but when I go to stop the air to fuel gets out of wack and the car dies... it either gets too much gas or not enough. But at idle its great and running through the gears is fine but you WILL need a tune. Im getting the NISTUNE software for mine. Id like to see what kind of numbers you put down on the dyno so shoot me an email if you get the chance.