Mercedes already has that Cylinder shutoff on their V12's they'll shut off one side of the engine when your crusing and when you wanna blow past some one the Cylinders kick right in, with out any lag. Pretty nifty setup they have.

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2005 Audi A4 1.8T CVT -Silver/Black "Siegfried"

1982 300D - Silver/Blue "Ralph" -For Sale:
http://www.peachparts.com/shopforum/showthread.php?p=852260

1989 VW Diesel Jetta Blue/Blue "Bodo" RIP