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I have found the DCT GTS tune to make the car much harder to launch off the line. The programming is specifically designed for the 4.4 liter GTS model. That said, I removed the GTS DCT tune AND removed the engine tune and I was able to get quicker and more consistent 0-60 times of 4.0 second. On the top end, i was able to gain less than 2 mph in the 1/4 mile with the tunes....so for me not worth it. Staying stock.
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