backpressure

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  1. Traumahawk

    Backpressure vs enrichening carbs

    Edited for content
  2. P

    Can I creat backpressure on cobra straight throughs?

    Hi. I love the sound/look of my cobra slip ons. However I've been told they're costing me a good 15+ hp due to lack of back pressure. Is it possible to stuff my own baffles?
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