E89 w/ N54 Tuning question
Thanks for the info. I had come to the conclusion that Dinan might be the best option though not yet available for the N54. Do they do the install or is it all DIY? What about air intakes and exhaust are these also necessary or are we getting into severely diminished returns? I certainly do not want the car to look any different from the outside, she's a beauty just as it is. My 12 year old daughter has christened her Clarisse.
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