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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,082
Some of us old guys still tune by vacuum.
Vacuum levels at high speeds (over 70 mph) become meaningless due to drag which put load on the engine = boost.
Turbo type makes little difference in engine vac at cruise as the turbo is not under load.
Old 06-17-2013, 09:50 AM
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