« Reply #1 on: 31 March 2013, 07:27 »
Your car all ready has an n75 valve. You can change the n75 to different versions which "can" alter the boost curve but this is very hit and miss if it does. Have you had the car mapped?
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2001 mk4 GTI 1.8t AUM. k&n induction kit with customer heat shield, 3'' TIP, Forge 007P, Stage 1 map, N249 bypass, 3'' downpipe and decat, 2.75'' Jetex cat back non res, Koni shockers and H&R springs 35mm, dimpled and grooved disks front and back
