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View Full Version : So has anyone figured out exactly how the O2 ramps work?



Force Fed Mopar
01-04-2013, 11:27 PM
As in, how to make it run leaner when you want it to (cruise and idle)?

mpgmike
01-08-2013, 09:03 PM
http://www.fuelsaver-mpg.com/efie-described

Use a double throw relay with either a switch or vacuum switch to activate. Run O2 sensor direct for cold and load conditions, switch over to the tunable EFIE for lean cruise.

Mike