Quote:
Originally Posted by radiantthought
So, I did a little bit of reading on the ECT spoofer, and see lots of descriptions of what it does (spoofs the engine coolant temp sensor to say the vehicle is at ~170F when it's between like 112-170F) but the thing nobody is talking about is why you'd want to do that. I don't know enough about the prius hybrid system to know why these numbers matter and why you'd want the ECU to think that it was at these temps. Anyone care to shed some light?
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The idea behind doing this is that the Prius has different stages of warm up. At low temps the engine constantly runs to reach the running temp of 170 - 195. By using the temperature spoofer, it helps to skip a big part of the warm up and allows for higher speed EV running earlier on. This way, you can perform a P&G technique at 112F instead of having to wait until the vehicle is fully warmed up to 170+F.
That's the basic idea anyway.