yamaha06

New Member
Hi everyone my problem is that i have just bought a 3.9 efi engine to replace my 3.5 and ive forgot to get the correct equipment for the lambda sensor. I only use this awesome truck offroad. Is there a way that you can simply bypass the sensor?? there are 3 wires on this one. Please can someone help?? and the snow is here!!:)
 
I assume you have a 14 CUX ECU and hotwire injection. If this is the case you're better off running with lambda as it gives better fuel trim control.

If you really really don't want lambda then change tune select resistor and set air flow meter accordingly.

If you do a search there is plenty of info on this.
 

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