I've installed my safc and I used the monitor function to show my throttle %. I push the throttle in a little bit, maybe 30%, and it shows 100%. Also, is just fluctuates sometimes and it isn't very consistant. Is this normal or is there a problem with my TPS?

 

This is normal on S4 cars as the TPS isnt "wideband"
If you have a boost sensor it will hook up to that one aswell.
I believe there is a thread about it in this section.

Kim

 

Its an s5, and the reading is just very inconsistant.. I"m not sure why.

 

Im just throwing ideas here, but maybe the TPS is broken or has not been proberly adjusted.
Try adjusting it to spec. and the initialise the system and start plotting in all the car data again

 

Should I initialize it when the car is warmed up or does it make a difference?

 

Doesnt matter, as long as the TPS is within spec.
The coolanttemperature does not affect the TPS setting. Well atleast I dont think so