Is the FC signal necessary

[elhsupra]

Project:
1992 LS400 1UZFE in a 1982 MA61 Supra. I plan to use the factory ECU for the time being. I have almost all the wiring complete.

Is the FC signal at the ECU necesssary. The Supra send the same signal from the circuit opening relay to ground. Does anyone see a problem with that or should I try to reroute that back to the FC at the ECU? I didn't know if that would cause problems with the ECU. Thanks

 

[sideshow]

if the ls400 uses an fc wire then run it

this is so when the engine stalls it shuts the fuel pumps off

mainly incase of an accident and fire could be very dangerous

just run the fc to the original fc on circuit opening relay

 

[elhsupra]

Thanks! That should now finish my wiring. Now for the exhaust.