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post #8 of (permalink) Old 10-31-2013
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Ltngdrvr's Avatar
Joined: Oct 2010
Location: Southeast
Posts: 7,791
Originally Posted by S197mustang View Post
The belt was slipping before and I was only seeing 5psi. I changed the tensioner and there is no slipping at 6.5 psi. I went ahead and ordered a 3.70 pulley. I want more boost. I'm a manual by the way.

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Well, the standard pulley is set to get around 8 psi, but the catless mid pipe reduces back pressure some so that lowers boost a bit but I would still think you should see more than 6.5 psi.

How high are you revving it?

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