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Whats up guys, this is my first post so hopefully someone will answer me. I just installed a pillar boost gauge on my '04 redline and currently, at idle, reads vacuum at 10, or -10. When I hit boost, at about 4 grand, it reads boost at about 4. I was wondering if this was normal for idle, because I had always thought there was no vacuum on supercharged vehicles. Anyways, let me know and thanks.

Tony

Black '04 Redline
Progress Springs
K&N CAI
Supercharged Fuel Rail Cover
Panasonic Sound System with Subwoofers
Air/Fuel Gauge, Boost Gauge on A-Pillar
 

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there is always vac. mine reads 20 vac. at idle
 

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but when he's at 4000 rpms... his boost is reading 4. That can't be right. I think you may have a leak in the line somewhere....
 
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