Hey everyone,
After a recent discussion here on the forum I put forth effort into working with an automotive electronics company on developing a Fuel Shutoff Safety Switch for 2JZ and 1JZ Soarer engines.
What is it?
The Fuel Shutoff Safety Switch is a small electronic module that turns a fuel pump relay (on the MA70, the "Circuit Opening Relay") on or off based on RPM input. Since it will only turn the pump on while a tach pulse is being read, it will shut the pump off should the engine stop running. This is how the factory ECU functions and is an important safety feature.
Why is it needed?
The stock ECU already has this function built-in, but the 2JZGTE ECU, and the 1JZ Soarer and Chaser ECUs, do not have it. They rely on a separate ECU (the Fuel Pump ECU) to turn the pump on or off. Because of this, people who have been swapping these engines for the past several years have simply been connecting the stock relay to a toggle switch to manually turn it on, which obviously isn't ideal.
If you have a JZA70 1JZ, you do NOT need this, since the JZA70 ECU has the fuel pump control circuit.
Availability and Pricing
I'm happy to announce that the first round of these modules is ready for use. The price is $99 plus $8 shipping (in the US) for customers who have had their wiring done by us. For the time being, we are extending this price to everyone until further notice.
Wiring the device in is quite simple, and we will provide full instructions and support. Wiring involves a 12v switched power source, ground, tach input, and relay signal.
Questions or comments, post them up! I put this thread in the 1JZ/2JZ section so that everyone that it applies to could see it
-Dr Tweak
After a recent discussion here on the forum I put forth effort into working with an automotive electronics company on developing a Fuel Shutoff Safety Switch for 2JZ and 1JZ Soarer engines.
What is it?
The Fuel Shutoff Safety Switch is a small electronic module that turns a fuel pump relay (on the MA70, the "Circuit Opening Relay") on or off based on RPM input. Since it will only turn the pump on while a tach pulse is being read, it will shut the pump off should the engine stop running. This is how the factory ECU functions and is an important safety feature.
Why is it needed?
The stock ECU already has this function built-in, but the 2JZGTE ECU, and the 1JZ Soarer and Chaser ECUs, do not have it. They rely on a separate ECU (the Fuel Pump ECU) to turn the pump on or off. Because of this, people who have been swapping these engines for the past several years have simply been connecting the stock relay to a toggle switch to manually turn it on, which obviously isn't ideal.
If you have a JZA70 1JZ, you do NOT need this, since the JZA70 ECU has the fuel pump control circuit.
Availability and Pricing
I'm happy to announce that the first round of these modules is ready for use. The price is $99 plus $8 shipping (in the US) for customers who have had their wiring done by us. For the time being, we are extending this price to everyone until further notice.
Wiring the device in is quite simple, and we will provide full instructions and support. Wiring involves a 12v switched power source, ground, tach input, and relay signal.
Questions or comments, post them up! I put this thread in the 1JZ/2JZ section so that everyone that it applies to could see it
-Dr Tweak
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