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forum newbie
hi guys, im new to the forums and the recently purchased 06 z4si sport. Thoughts so far, i am completely impressed with the driving characteristics of this car. never have i taken a sport button or steptronic transmision seriously untill i got into this z4! Throttle response and vehicle responsiveness is unlike anything i have ever felt. through my research from the past two weeks i havnt found a whole lot of info on the SI motor, other than vendors not making go fast parts for it yet. Being an owner of a recently sold 400 awhp big turbo, bugeye wrx. and an 05is300 in the build stage of a pt67 turbo you can say ive caught the mod bug and cant wait to start toying with this zed4
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