Meth Failsafe
08-15-2017, 09:52 AM
#2
Back when I was using meth, I used an extra coolant overflow tank to hold it. I had intentions of using the low coolant float wiring to wire to the valet mode of EFI Live. When the meth ran low, it would only run to a desired RPM like 3500 or so. I never hooked it up because I changed setups, but I don't see why it wouldn't have worked.
08-15-2017, 12:25 PM
#4
Could use a pressure switch to solenoid to the wastegate, depending on how you have it plumbed.
When meth is "on", failsafe relay gets power. When the pressure is adequate (lets say >100psi), pressure switch that is normally closed is open. So if its on and >100psi nothing happens, but if it is on and <100 the switch is now closed. You could use this to control a solenoid that is a bleed to the top port on the wategate. Wont take you down to 0psi, but would reduce you to spring pressure assuming you are using the top gate port.
When meth is "on", failsafe relay gets power. When the pressure is adequate (lets say >100psi), pressure switch that is normally closed is open. So if its on and >100psi nothing happens, but if it is on and <100 the switch is now closed. You could use this to control a solenoid that is a bleed to the top port on the wategate. Wont take you down to 0psi, but would reduce you to spring pressure assuming you are using the top gate port.
08-15-2017, 03:09 PM
#6
Your tune at 6psi should not be the same as at 20psi or whatever you are running.
Instead of cutting boost you could play tricks with the iat sensor circuit or something to cut a bunch of timing if the pressure switch opens.
Or you could just watch your wideband like everyone else does
Instead of cutting boost you could play tricks with the iat sensor circuit or something to cut a bunch of timing if the pressure switch opens.
Or you could just watch your wideband like everyone else does
