2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

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Whats a good vacuum pressure?

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07-31-01, 06:25 AM

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SupSai7

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Whats a good vacuum pressure?

I'm showing 20 on my autometer boost gauge on start up then it drops off to 12-15 when warm. Is this good, bad , normal? I have a 89'TII with the stock turbo with bonez intake and Greddype catback with about 105,000 miles on engine and turbo. Everything else is stock. Just wanting to know.

Thanx,
Earnie

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