ok whats the deal ??what does it do ,,heard you unplug fuel temp sensor and jump it out with 150 ohm resistor,,why heard it afew times but not what it does.. and what about this euorpean program mr haney talks about and who does it ,how much$$ and contact info ,,i got a columbia 07 cat c13 asert kcb 823k

If anything it would tell the engine that the fuel is warm so it injects more, giving you a bit more power. Maybe 2-3%.

do you have to use aresistor or a piece of wire work???or is that bad

they sell a kit, opinions vary, but most Cat dealers say it will harm your engine