help with o2 readings

[1of1035]

I just installed my scanmaster today. I took it out for a drive and my o2's are going from 392 to 850 back to 000 and then it was at 38 then back into the 700's. From what i understand 720-750 is normal. No codes are coming up either. Is this normal?

 

[86brick]

Was this at WOT? Sounds normal to me if you were just cruising.......

 

[1of1035]

I was at wot then after i got out of it they were still bouncing all over the place and when i parked and let it idle for a bit it was reading 530-540. Also got 6.6 degrees of knock on 15# which i run every day and sometimes 18 and i never hear any knock. I have a knock sound coming from my cat could this cause that much knock to show up?

 

[NJTurbo]

02 will bounce all over when driving and at idle. The thing you need to check is WOT blast. You can hit recall on the scan-master after a blast as it will record the highest numbers.

Also 6.6 knock you probably would not hear under WOT. Fix that cat and put some real fuel in it like 100 or 110 and you should be able to turn up the boost with little or no knock. Now that you have a scan-master make sure all your base settings are correct, here this will help you.

http://www.gnttype.org/maint/quickref.html

 

[Vendor Defendor]

i get numbers in the 000 and below 100 a lot.. that is normal you say?

just wondering

thanks

-Neil

 

[NJTurbo]

Originally posted by Vendor Defendor
i get numbers in the 000 and below 100 a lot.. that is normal you say?

just wondering

thanks

-Neil

At idle