Hi, My car is 93' Escort Rs Cosworth. I have L8 (Red Sticker) ECU, Non Cat, 803's injector, 3 bar map sensor, Wolf Racing Chip (Turbo pressure 22 Psi), and I have lambda sensor.

1.I use with lambda or not? Which is correct, because Red Sticker means No Lambda..?

2.When I set the CO (3.0 arround) after 2 day, I check it again and it goes to 0.2 (CO)..so I think maybe, lambda sensor cause this..?

Thank you very much..