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15% pulley upgrade noise

1011 Views 0 Replies 1 Participant Last post by  ThatRandomGuy
So I just finished installing a 15% pulley to my 02 MCS. The first time I started the car after the replacement, the supercharger made a grinding noise. I test drove the car and it went into limp mode. I put everything back and don't understand why the car is making such a noise as it was quiet before. Any thoughts?
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