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Procharger only building 5psi

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I have recently installed a new 255 pump and after a couple of tunes the supercharger is only building 5 psi- not sure if the belt is slipping or not - a couple of weeks ago supercharger was building boost just fine8-10psi

Any other feedback would be most appreciated

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  • 4 weeks later...

Defintely more info on your setup would be a great help but it sounds like a boost leak to me. Even off idle my D1 made 6 psi at 2600 with the 3 core IC setup and a 4.0 pulley.


So if you could get us info on your setup that would be a great help in anyone sending you advice.

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