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Old 04-07-2021, 10:04 PM   #1
Gburrage
Scooby Newbie
 
Member#: 518389
Join Date: Sep 2020
Default Why would my sub Have a higher than normal vacuum pressure?

I think my catalytic converter is out and when running The vacuum test we noticed the idle is higher than normal.
When you go up to 2500 RPM the needle on the gauge started bouncing all over the place.

Thoughts?
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