P1557 and P1331

[So_NAudi]

Ok i know that 1331 is the o2 sensor, and 1557 is overboost in the turbo, so im told by my code reader. Is there anything i could do to knock out both? is the overboost a condition of my bad o2 sensor? I have the sensor on the way. Hoping its just that.


Any help is greatly appreciated.

[1997gtx]

Overboost will likely have more to do with a bad N75 valve.

O2 sensor is a separate thing.

I'd clear both codes and wait for them to come back.

Then, replace both.
--Adam

[So_NAudi]

Thank you Adam. Thats what i needed to know.

Does anyone know anything about the Race N75 from ECS? Or should i just stick to an OEM one?

[1997gtx]

Are you stage 3? If not, stick with the stocker.

Always a good idea to log block 115 (boost) before you start replacing things, if you can.
--Adam

[So_NAudi]

my code reader is basic (couldnt afford the VAG-COM but thats slowly becoming a necessity) so i dont think i can log.

Thanks for all your help!