Thread: M3 3.0 VS M3 Evo
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Old Aug 15, 2008 | 10:00 PM
  #33  
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Jim Galbally
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From: Ramsgate, Kent Drives: E39 530D Touring
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vtec has 2 sets of cam lobes and switches between them, so you have 2 cam profiles.

vvt/vanos is 1 cam profile that just advanced/retarded
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