The SCT4 connects to a laptop using a standard micro usb cable. And it uses an HDMI to OBDII cable for the car
Once you have unlocked the SCT on your computer (it costs $200) it will come with a few standard tunes but for anything more you will have to buy / download them elsewhere and load...
In the process of making a custom exhaust for my 3v and my question is simple. The collector for my LT headers (bbk) seems to be 3’. Do I need to use 3’ pipe all the way back or is 2.5’ (as seen in photo) good to use?