John from Toledo came by our shop in his 2014 CTS-V Sport. We changed his engine oil and filter, replaced the leaking intercooler fill port, then filled and bled his intercooler system. We worked up a custom tune on our DynoJet, for net gains of 34 whp. Air/fuel and boost curves are much nicer now, and the electronic throttle stays completely open too!
John
from Ohio
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