[bestclimb]

Originally Posted by dohcsvt

I installed a new set of bridgestone B381's and an engine off coasting switch in my car. I previously had the following mods
Removed the A/C and Power steering belt.
Installed a partial grill block.
Installed cruise control sourced from a junkyard.
installed lower valance made of yard edging
Side gapped and indexed plugs
Synthetic fluids in tranny and engine
On my way to work today I averaged 47MPG, which is by far the best FE ever in this vehicle. I am hoping to do better, but need some input.

Will playing with engine coolant temperatue help with FE?
Does fooling the CPU by pulling the O2 sensor out of the exhaust flow stream really help?
How about the IAT sensor with a resistor mod?

Any input will be appreciated.
Ottis

This site has some information on a coolant sensor mod, and I seem to remember some other small signal mods.

By pulling the O2 sensor out of the exhaust flow the computer will sense a lean condition, to correct for this it will add fuel. Seeing no change in the O2 values after increasing the fuel in the mixture, it will disregard the O2 sensor, throw a code and revert to running on the map, which is less efficient.