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Yes, you need to eamil your 'stock file' to Magnuson. They will modify and send it you back. It doesn't take too long if you spend two or three days to install Maggie. If you have 2017 Camaro, it's different story. SCT does not provide proper firmware for 2017's at this time. You may purchase HP Tuner if you or your engineer don't have HPT.
I installed Maggie but I'm waiting for HPT for this trouble..
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