need help wiring efilive 2step with nitrous
06-30-2008, 01:47 PM
#1
need help wiring efilive 2step with nitrous I have a basic nitrous kit wired up. nothing special. Just a system on/off (2 pole switch) and a WOT switch.
I also have efi live cos3 with the 2step. The way that works is a wire from pinout 56 of the pcm just needs grounded to turn on the 2 step.
Currently I have the 2step ran to a momentary switch that acts as a system on/off. Then it goes to a relay that ties into the brake light switch. The way it works, is if i press the brakes and have the momentary switch on the pcm will be grounded until i release the breaks or release the momentary switch. That way I can launch the car off the foot brake and then turn off the system by releasing the momentary switch when I feel like it after the launch, but before I hit the brakes again.
What I need help on is getting the nitrous system tied into the 2step system. I cant think of how to do it. Every way I see in diagrams would send 12v to the pcm pin 56 and i dont want to do that.
help!
I also have efi live cos3 with the 2step. The way that works is a wire from pinout 56 of the pcm just needs grounded to turn on the 2 step.
Currently I have the 2step ran to a momentary switch that acts as a system on/off. Then it goes to a relay that ties into the brake light switch. The way it works, is if i press the brakes and have the momentary switch on the pcm will be grounded until i release the breaks or release the momentary switch. That way I can launch the car off the foot brake and then turn off the system by releasing the momentary switch when I feel like it after the launch, but before I hit the brakes again.
What I need help on is getting the nitrous system tied into the 2step system. I cant think of how to do it. Every way I see in diagrams would send 12v to the pcm pin 56 and i dont want to do that.
help!
06-30-2008, 02:36 PM
#2
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12 volts to a relay coil (pin 86) then pin 85 will go to the pcm input off the momentary switch.That will give a controlled auxillary contact from the 2-step control. Is that what your after?
06-30-2008, 03:44 PM
#4
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Easy as pie. From your diagram move the wire on terminal 30 to terminal 87. Now connect the ground wire to terminal 30. Using a new realy wire 12+ to one side of the relay coil (terminal 86) and then connect the new relay coil other connection (terminal 85) to terminal 87a of the two-step relay. Now you have a controlled contact that only operates when the brake is off and the two-step is inactive.
