Description
Just like it sounds. Custom chip is CUSTOM for the (THROTTLE BODY INJECTION) system. If you have changed the HEADS or installed a STROKER kit then you need a custom chip as well as fuel system and throttle body upgrades to support this setup. So you likely have already communicated with me several times before getting to this stage. I will need the custom tuning from filled out on https://harristuning.com/Tbi/custom-tuning-form/
