Failesafe question

[sebdut]

Does the hfs-3 runn even if the failesafe is not connect to the n75 on the ECU?

Yes, the failsafe need not be connected, the unit will still run.

[sebdut]

And so DHB on the controller must be unlincked and DFS linked that's right?
Another question the "inj" jumper as said in the notice is the same of FAV jumper for disabling the FAV?

If you don't hook the white and brown wires up to the N75 valve, it doesn't matter if you change the jumpers or not. If you have hooked up the wires and want to disable the failsafe from interfering with the N75 valve then yes, you need to change the jumpers. Is this what you are trying to do?

Yes, the INJ jumper, when removed, disables the FAV.

[sebdut]

Ok thanks so I don't hook the wires up to the n75.
The problem for disable the FAV is Thatcher I don't see the INJ jumper on the controller I see FAV jumper

Sorry, the V1 board(blue board) the jumper was labeled INJ.

For the V2 board(black board) the jumper is FAV.

It does the same thing.

[sebdut]

Ok that's I was thinking thanks for your help

[m.s4]

Originally Posted by Howerton Engineering

If you don't hook the white and brown wires up to the N75 valve, it doesn't matter if you change the jumpers or not. If you have hooked up the wires and want to disable the failsafe from interfering with the N75 valve then yes, you need to change the jumpers. Is this what you are trying to do?

Yes, the INJ jumper, when removed, disables the FAV.

This is what I want to do for the track where my midthrottle interferes occasionally . Which pins do i need to switch to disable the failsafe but allow my n75 to function normally?

Pull the jumper from PRK and place on DFS to disable the failsafe during normal operation.

[Richard L]

Jeff,

I think m.s4 has v1 circuit board. DFS jumper link is not available.

m,s4,

You can do several things:
1. Widen the WL and WH window
2. Set the F/S delay trimmer to fully clockwise.