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oliverc · 10-21-2015, 12:26 AM

Hi all,

I wired my boost gauge to the brake booster line (along with the BOV), and it is reading at about 6-7psi. I know from my OBD that I am actually achieving ~10psi. The line is quite short ~8inches, and I havent been able to determine a vacuum leak, but would a handheld vacuum pump help diagnose the problem, and if so how?

Thanks in advance.

10-21-2015, 12:26 AM	#1
oliverc Member Join Date: Jan 2014 Drives: Surbaru WRB BRZ Location: Virginia Posts: 20 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Perrin Boost gauge reading inaccurate? Hi all, I wired my boost gauge to the brake booster line (along with the BOV), and it is reading at about 6-7psi. I know from my OBD that I am actually achieving ~10psi. The line is quite short ~8inches, and I havent been able to determine a vacuum leak, but would a handheld vacuum pump help diagnose the problem, and if so how? Thanks in advance.