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The transformation of my 2009 420S
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07-25-2011
BAMA420S
SOEC Member
Join Date: May 2010
Location: Huntsville, AL
Posts: 7
The Racecraft didn't have the 475 from the factory. I got that upgrade when I did the supershaker upgrade. Then we just tweaked it on the dyno and got 500hp at the flywheel. He said I would gain a little more by adding a larger cooler.
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