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vacuum modulation upgrade

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Old 03-29-2006, 06:32 PM   #1
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Default vacuum modulation upgrade

Likes and dislikes....... Im in the process of rebuilding my 4l60e and dont know if its worth the 100 bucks for the upgrade. What do you guys think?
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Old 03-29-2006, 11:34 PM   #2
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It offers, quicker (no delay) downshifts, firmer WOT 2-3 shift, responds to throttle changes immediately (no delay) in terms of line pressure response. I use these in "all" my performance builds.
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Old 03-29-2006, 11:34 PM
Pontiac Firebird

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