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Airbox Modification For Increased Sound
johna
posted about
1990 BMW 318is
12 years ago
Inspired by a news item for a Porsche "exhaust enhancement sound package" in Zoom magazine (Feb-Mar 1997) I thought if it was good enough for Porsche to drill holes in the side of the airbox to...
bmw-e30
bmw-318is
bmw-e30-318is
airbox
upgrade
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