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You don't send your current file. Zach at CSG will send you a new base map based on your current mods/setup and you will flash over your current tune as your ecu has a license on it. He will then ask you to log with certain logging points selected. He will then send you revisions based on the logs. Rinse and repeat till tune is done
Sent from my GM1915 using Tapatalk
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2013 Series 10 FRS #553
RCE T2's, SPC LCAs -4/2.6 camber
JDL 4-2-1 EL, FP and OP, Tuned by Zach@CSG on e85
RR Wilwood Front/Rear Sport BBK, Motul 600 Fluid
ARC-8 17x9 SX2 GTs 245s/Koing 17x8 v730's 225's
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