I think it's a problem with Manufacture, as there is no external means to adjust the TPS Sensor from the TPS Switch.
I'm running my 'Offset TPS Switch' and the only symptom is an excessively Rich progressing off Idle Stumble.. I think that is because the TPS Analog Signal is now not calibrated properly for a smooth progression From Idle to Running. The Enrichment Calculations put in too much fuel.