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If i get the Mac LT headers do i need to get a new x-pipe for it too. I haven’t heard anything about me needed one but jus wanted to make sure before i get the headers and end up surprised. Sent from my iPhone using the svtperformance.com mobile app

So i bought a SCT X4 wireless Tuner a while back now and i can’t seem to get the tune to upload to the car. I follow all directions but it says it’s trying to connect to the ECU but will fail damn near immediately after me pressing upload. I’ll hear some wiring noise like a fan but once the tune...