Goon
Scientific Tuning
- Joined
- Feb 20, 2006
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- BrisVegas. QLD
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I've got a really silly question and i know it is..
What makes a 2.5 pipe... the metal thickness itself? Or the diameter on the circle of the pipe?
What makes a 2.5 pipe... the metal thickness itself? Or the diameter on the circle of the pipe?