white o2 sensor and turbo exhaust turbine

[polonez]

ok im in the process of installing an evo 16g
i have everything taken apart. last time i had it apart the o2 was black because valve seals needed to be done which i have now done! I took it apart today and the o2 sensor is white and so is the turbo exhaust turbine... I checked the plugs and they seem to be fine (dark tan color) so im a little stumped here guys

 

[Jason84]

thats normal dont worry about it. just tune the car with a wideband you will be fine.

 

[brute]

Is there any way you could post some pictures? They might help quite a bit

 

[KuZo]

sounds like you're running really lean.

 

[olmytsi]

sounds like you're running really lean.

Thats what it is...Add a little bit of fuel specially since you are putting a higher flowing turbo on.

 

[ericbev]

Have you been running leaded gas?

 

[polonez]

i have been running 94 octane the whole time. t25 turbo with bcs removal. fipk filter and dave brode upic pipe with 1 g bov recerculated. also did bcs mod

sounds like ok for stock fuel?
if i was running lean wouldnt my spark plugs be covered white too? they look perfect

 

[KuZo]

what are you running for fuel..... SAFC, larger fuel pump, FPR, injectors?