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lowered my nismo now there is a thumping at 70 mph

It maybe the undertray...check and see if all the clips are still buttoned up. They will pop loose at high speeds and the undertray will flap when there is enough

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lowered my nismo now there is a thumping at 70 mph lowered my nismo now there is a thumping at 70 mph
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Old 02-25-2014, 07:54 PM   #1 (permalink)
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It maybe the undertray...check and see if all the clips are still buttoned up. They will pop loose at high speeds and the undertray will flap when there is enough turbulence.
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Old 02-27-2014, 11:20 AM   #2 (permalink)
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It maybe the undertray...check and see if all the clips are still buttoned up. They will pop loose at high speeds and the undertray will flap when there is enough turbulence.
this!!!!

when mine came loose at 80mph it would sound like a horrible thumping. but it only got worse the faster i went.
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