Hi guys,
Complete rookie here.
I have a s15 g4plus link plug in ecu running a can lambda. It has been working fine for the last 6 months.
Now when I start the car it runs normal around 13afr at idle. As soon as I increase the rpm a little it goes up to like 90afr then doesn’t come back down. But still runs fine. It will fluctuate from 50-120 ish.
I have run new wiring to the can lambda,
swapped the ecu with my other car(same ecu) swapped the can lambda and Bosch sensor.
There aren’t any major exhaust leaks.
The car hasn’t been tuned but I’m certain those readings aren’t correct.
I’m unsure where to start next.
