Better MPG for just about no money. Options

[TannerEsser]

Take a ristor that has about a .2k ohm resistance and plug it in to the plug that goes to the IAT sensor. the car will use less fuel. and still read a temperature that is in spec and wont throw a code. it worked for me. but since it leans out the fuel dont drive very hard it could be hard on the engine.

This post has been edited by TannerEsser: May 25, 2012 - 9:45 AM

[azian_advanced]

you actually want to reduce the resistance (not increase it) to fool the ecu that it's getting hotter air and make it run leaner.




running leaner will just reduce your power output but unless you change the way you drive (ie. driver demand on engine power) you're actually gonna use more fuel. it can also cause the engine to run hotter and possibly scorch the internals.

there are much better and safer ways than this to improve the fuel economy, imo.

[czwalga]

you actually want to reduce the resistance (not increase it) to fool the ecu that it's getting hotter air and make it run leaner.




running leaner will just reduce your power output but unless you change the way you drive (ie. driver demand on engine power) you're actually gonna use more fuel. it can also cause the engine to run hotter and possibly scorch the internals.

there are much better and safer ways than this to improve the fuel economy, imo.

If you run the resistor in parallel with the IAT sensor it will reduce the resistance, depending on the IAT resistance range and what resistor you pick. 1/(Resistance Total) = 1/(R1 IAT variable)+1/(R2 resistor you pick)



That said, i'd be shocked if it made any noticeable difference. Do what Stephen_lee said you'd be better off.

This post has been edited by czwalga: May 30, 2012 - 8:06 AM