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Old 06-26-2009, 04:36 PM   #13
Sack Rat 2SS

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Drives: Silver SS/RS, Man 6
Join Date: Apr 2009
Location: DFW area, Texas
Posts: 867
I amazed that your car even starts and runs on the factory tune. You said you will up the idle RPM next week when you tune the ECM which will really help the lumpy idle. And, the sound with your new exhaust is terrific. Let us know how it sounds inside the car at highway RPM's and if there are any harmonic's at cruise speed. Good Luck
Silver 2SS/RS Man/6
CTS-V front 6-Piston Calipers,
GM 3.91 Rear Gears
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