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I just spoke with the guy at Classic BMW (Plano, Texas) regarding the Stage 3. He said that merely having an axle back exhaust WILL make the Stage 3 worth upgrading to.
I'm will to give it a shot, provided that the cost is not too much. I'm currently at Stage 2, so I'm guessing a couple hundred bucks (plus, install cost)?
I may go ahead and have the car dyno'd while I'm at it.
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