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Does The Duttweiler Modified Neck Work?

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Does the modified neck give out 38hp on average?

  • works as advertised

    Votes: 5 83.3%

  • only slight gains

    Votes: 1 16.7%

  • insignificant gains

    Votes: 0 0.0%

  • dont buy one

    Votes: 0 0.0%
  • Total voters
    6
G

GNBlack

New Member
Joined
Apr 23, 2002
Messages
63
THe company claims a 38 hp increase on average. From what you have experienced or heard are these claims accurate?
 
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