It appears from the comments and wiring connectors shown that this a version of "fool the ECU by spoofing the sensor inputs" type of "enhancer".
The S&S tuning software, which reads the actual sensor values, is free. Though you do have to learn how to use it, and it's a wee bit complex.
Yep, I understand that, however the ECU is locked, so I cannot adjust the fuel map? Is there any benefit of using these type of tuners?
