I will be purchasing an e-manage. It comes with the injector and ignition harnesses. Do I need any additional harnesses such as the frog harness? I am not sure what this harness does.

Currently running non aftercoooled comptech supercharger and running lean.

Thanks for the help.

 

You have to splice into the car's wiring somehow. A V-AFC harness (or Frog harness) just gives you something to splice so that you don't have to splice the OEM wires. So, you splice into the frog harness then plug the frog harness inbetween the ECU connectors and the ECU. This also gives you a good way to go back to stock if need be. I wouldn't dare do it without some type of V-AFC harness.