FM O2 signal Voltage Clamp

FM O2 signal Voltage Clamp

07-46300

Regular price $138.99 Save $-138.99
/
Shipping calculated at checkout.

Only 0 items in stock!

This device is crucial when running boost on a Protege with a non-turbo ECU. A non-turbo Protege wants to run at a 14.7:1 air:fuel ratio, and you need to run much richer than that (around 12:1). Without this device, when you add fuel (be it by an FMU, extra injectors, etc) under closed loop, the stock ECU will see this, and learn to pull the fuel, making you run too lean under boost and detonate.