tuneda4

i know i am going to need a tip and will prob purchase the apr one. what else do i need? the car is driving so so right now. i hit the gas and i can feel the turbo wanting to pull the car but it hesitates big time. i thought it was the heat from the weather here lately but even when its cool it goes no where. its not a lag hesitation, it has the feeling of a few hoses expanding and not being able to hold the power. i also dont hear the turbo whistling. what should i do? thanks in advance