Devilsown Methanol Alcohol Water Injection - View Single Post

agrazela · 02-28-2008

Just to be clear, here is what I am trying to do:

I want to put a relay between the controller and the pump so that when the controller gets up to 8+ volts to the pump (minimum relay closing voltage), the relay trips and the audio-taper trimmer will function as an IAT spoof (for a few extra degrees of timing, as determined in my tune). When the controller powers down the pump (dropping to release voltage of about 1.5v), the relay will bypass the trimmer, giving me normal IAT function again.

I put a diode in there to try to suppress voltage surge from the relay coil.

(Note: I also wired the float switch into the power wire, thinking that if the float breaks the circuit due to low fluid, it would purposely trigger fault mode in the controller, purposely making the pump not run and the IAT spoof not be able to function...call that a "failsafe")

Anyone see any flaws or problems with setting up like this?

02-28-2008	#6 (permalink)
agrazela Water Injection Newb Join Date: Feb 2008 Posts: 9	Re: Toasted 2 controllers last week Just to be clear, here is what I am trying to do: I want to put a relay between the controller and the pump so that when the controller gets up to 8+ volts to the pump (minimum relay closing voltage), the relay trips and the audio-taper trimmer will function as an IAT spoof (for a few extra degrees of timing, as determined in my tune). When the controller powers down the pump (dropping to release voltage of about 1.5v), the relay will bypass the trimmer, giving me normal IAT function again. I put a diode in there to try to suppress voltage surge from the relay coil. (Note: I also wired the float switch into the power wire, thinking that if the float breaks the circuit due to low fluid, it would purposely trigger fault mode in the controller, purposely making the pump not run and the IAT spoof not be able to function...call that a "failsafe") Anyone see any flaws or problems with setting up like this? Last edited by agrazela; 02-28-2008 at 03:14 PM.