Performance Enhancing a C4.....for under 5$..
12-13-2007, 11:36 PM
#16
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Join Date: May 2007
Location: Uxbridge, Ma
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For my 2005 C2 (3.6L), I changed to the Evo airbox and an AutoAuthority retune to the ECU. The drivablity was much improved. Stock, there was a drop around 3200 RPM that was noticeable. With the ECU tune, that gully went away, and was more enjoyable to drive. I doubt there was much improvement to the HP, but torque felt much better. Not sure if the 3.8L engine has this problem.
