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Old 01-29-2017, 06:55 PM   #16
bfrank1972
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Quote:
Originally Posted by JDM4E View Post
Hi guys, can you tell please more about the NVH? I asked about this in a separate thread but people swear that haders do not increase vibrations. Thanks
Well they shouldn't be increasing vibration from direct contact, but they will make more noise. Every aftermarket header I've seen does not come with a shroud like the stock headers do. In addition to functioning as a heat shield, it's also a noise dampener. Even nice thick walled headers like these P&L will give more localized noise under your feet (and possibly perceived "vibration" albeit slight) - no shroud, and the nose is both direct from the tubes as well as reflected by the undertray. It isn't obnoxious at all though - I noticed it somewhat when I first swapped headers, now I don't notice.

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