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Discuss the RB20, RB25 and RB26 series engines.
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BoostFab
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my gauge register vac at 20, are yours sit around there as well?

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Joe
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18-22" is considered "normal" for cars at idle. most RB's ive seen fall between those same numbers, mine is near 22.
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BoostFab
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good to know, thanks!
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Imissmyturbo
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My RB25 has always been 17-18 inch/mg .
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BoostFab
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Imissmyturbo wrote:My RB25 has always been 17-18 inch/mg .
is your idle stay constant? btw! you meant inch/Hg lol
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