2nd Generation Specific 1986-1992 Discussion

Whats Stock Boost?

Old 05-06-2004, 06:37 PM
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Ok on an 88 t2 what is the stock boost, is it 7-8 or is it 5 ive herd both that now and im confused. What is it?
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Old 05-06-2004, 06:39 PM
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5.5 the 7-8 figure is for the 89-91 series 5 2nd gens.
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Old 05-06-2004, 06:40 PM
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5.5 psi
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Old 05-06-2004, 06:42 PM
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ok, sounds ok then I guess cause my boost gauge is reading a little over 5, I thought at first that I was leaking boost cause I herd the whole 7-8 psi thing on stock, so wait is that why s5 are faster more boost? I thought there was alot different about them. explain.
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Old 05-06-2004, 06:47 PM
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More boost, slightly better turbo design and a lil higher comp rotors.
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Old 05-06-2004, 08:25 PM
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what should my vacuum be reading on the gauge cause mines at 20 i thought it should be 10
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Old 05-06-2004, 10:06 PM
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i have a large ported wastegate and my boost is at a consistant 7lbs or so.... and it doesnt change at all, so im not hitting boost creep at all. Oh yea, its an 87. Also, my vaccuum reading is right around 20 as well.
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Old 05-06-2004, 10:26 PM
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You guys get 20 inhg at idle?? With my stock port I get a max of 18 at 1000rpm idle. What rpm is your idle set to?
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Old 05-07-2004, 10:32 AM
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the elevation you live at will effect vac. in reno i was pulling around 15-18 in phoenix I pulled over 20
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Old 05-07-2004, 11:26 AM
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at 1k I have around 20, but when my idle drops to 750 its around 18
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