Tial BOV Q Vacuum at idle

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Sep 12, 2012, 04:52 PM

5LEEPERISAH23I

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Tial BOV Q Vacuum at idle

Well im installing S3 cams this weekend. From what i have seen/read people idle at 1,100-1,200 RPM. The Vacuum reads -10 / -12 Now the Black Tial Spring is recommend for -8 / - 11 the White Spring is -12 / -15 What spring do i get?

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Sep 13, 2012, 07:27 AM

mcm308

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I run the S2 cams. Idle is a lopey 1000 and vac is about 11.8. I errred on the stiff side and went with white. Its fine and working the way it should. You don't want to end up to soft and it floats at idle. I'd say you need to install your cams first and see what your new vac number is before you swap your spring.