The TPS mod is referring to "Throttle Position Sensor". I think you may mean the Throttle Cable Mod. This is a simple procedure of pulling the slack out of the throttle cable from in front of the throttle pedal, and attaching a few Zip ties to hold it in place with no slack. This gives you a TRUE Wide Open Throttle and MUCH better throttle response.
I've had mine modded for 5 years now....never broken a Zip tie, never needed to take up more slack. However one day I removed them to remind myself what it felt like without it, and I was nearly sick.
The Black Beast 5.0
Better to Have Horsepower and not Need it, than to Need it and not Have it!
2000 Ranger Sport - 5.0L V8 - 8.8 LS rear