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'16 WRX boost gauge question

1K views 6 replies 3 participants last post by  MainFrame 
#1 ·
I'm just wondering what the best (most easily accessible) vac source is on the '15+ WRX for a boost gauge. I understand the one that comes with the car should be fine; but, I prefer to have an external one. Any advice would be great. Pictures are even better.
 
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