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      01-26-2008, 04:01 AM   #3
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Drives: '05 M3 ZCP SG/IR
Join Date: Jul 2005
Location: YL, CA

Posts: 34
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It is called rev matching. It is the engine/tranny software matching your speed from one gear down to the other without any disruption in power.
'05 SG/IR M3 ZCP w/Dinan S3-R, '04 X5 4.4i TB/BL, '04 CB/IR M3 Carbrio

'04 Solar Yellow AEV HEMI Rubicon
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