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The Rtek7 ECU Upgrade v1.0 for S4 Turbo II cars does three things:
- Eliminates Fuel Cut ("FCD")
- Eliminates the Accelerated Warm-up System
- Allows user to clear engine flood easily
Built in Fuel Cut Defenser (FCD):
The stock ECU will cut fuel to the rear rotor when boost hits the fuel cut threshold of about 8.6 psi. Although this was put into the stock ECU as a protection mechanism, it's a quite harsh mechanism and not required for mild improvements in boost.
The Rtek7 goes right to the source by removing the code responsible for Fuel Cut from the ECU altogether. This has the additional benefits over external FCDs in that it doesn't alter the boost signal to the in-dash gauge, there are no wires to splice, and no additional box to clutter the engine bay.
CAUTION:
RUNNING TOO MUCH BOOST WITHOUT ENOUGH FUEL CAN DESTROY AN ENGINE. EVEN THOUGH THE FCD IS BUILT INTO THE ECU, IT IS THE CUSTOMER'S RESPONSIBILITY TO ADDRESS FUEL REQUIREMENTS SEPARATELY.
AWS:
When you first start your RX7, the ECU will rev the engine to approximately 3000 RPM's - this is the Accelerated Warm-up System (AWS) in action. The purpose of the AWS is to warm up the precat. Of course, one of the worst things you can do to a cold engine is high revs. This mod removes the AWS code from the ECU allowing your car to idle normally when cold.
Flood Clear:
The Rtek7 Upgrade eliminates the need to pop the hood to pull a fuse when the engine is flooded. Simply press the accelerator to the floor and crank. The ECU will now stop fuel delivery for as long as you keep your foot on the floor.
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If you have any questions regarding the installation or use of your Rtek7 ECU Upgrade, please contact us at
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