Been getting right around 20mpg with the truck. I have noticed that cold starts are MAJOR killers on mileage. My cold start idle is 2000-2500rpm, seems a bit high to me. I suspect the computer is adding extra fuel from when it had a fan installed, but now is over reving. I'd love a simple adjustment for this, but I suspect the ECU controls it and the only way to override it will be to alter the temp sensor readings to the ECU to be warmer.
I always wanted to do the coolant temp sensor mod to my corolla due to the fact it won't shift into overdrive till the engine hits 130F, of course with my Tacoma stick, I don't have that problem
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