Hi, my tuner tried to install my jb4 and my car responded horribly to it. The jb4 made my car undriveable but yet it didnt throw any CELs. Also when we took it off the car ran fine. We checked all the connevtions and installed the jb4 again and the car ran like $#@! again. So at this point its off the car and im waiting for a answer from bms support. Do you guys h have any insight?
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