HappiBox Information
Thanks for your interest in HappiBox.
If you have access to a scanner watch for the TCC command switching from on/off/on/off etc. at steady throttle while the problem is happening. You will also see a fluctuating APPS voltage at the same time. It only takes a . 02 voltage change for the PCM to think you are trying to accelerate and unlocks the TCC. The HappiBox takes control of the APPS signal away from the ECM and sends it Clean And Clear to the PCM. We don't filter the voltage more like a traffic cop we redirect it to the right places at the right times avoiding the voltage car wreck that happens inside the ECM. I hope this information is helpful.
Thanks Kris