Engine, Drivetrain & Forced-Induction
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Help Boost gauge peaks at -17 vacuum

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Old Apr 4, 2024 | 09:03 PM
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G37xMN
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From: Minnesota
Boost gauge peaks at -17 vacuum

Any boosted boys able to help me out? I recently got my ACE supercharged G37 running and the boost gauge typically peaks at -17.5 WOT to redline. Highest I’ve seen is 17.3 inHg. I T’d off the vacuum line coming off the rear driver side of the Intake Manifold. BOV is ran off the opposite side vacuum line. (rear passenger side of Intake) Tuner says I’m only making 9 pounds of boost and should be making around 16 on the kit according to Topgunz Aaron. I see belt debris being sprayed on to the intake piping right after the supercharger, as well as on the Supercharger Bracket. It’s slipping along the Idler pulley on the Serpentine side.
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