Low 02's

[jerrad]

Guys, I was making a couple WOT blast today and noticed my 02's are aound 745 at WOT. I'm running alky but do I need to add a little fuel with the chip to get the 02's in the 780 range? I had 0 kr on the runs.
Thanks for the help.:smile:

 

[TurboDave]

If your car is running OK, I wouldn't put too much stock in what the narrow band is reading at WOT. They'll all be different. I don't run alky, and mine even seems to like it best down in the mid 700's, but the wide band reports good A/F ratios of 11.0-11.5

 

[jerrad]

Thanks, I just don't want to run it lean. I have an EGT but not a wide band. What is the optimom EGT reading for the gn?

 

[TurboDave]

Thanks, I just don't want to run it lean. I have an EGT but not a wide band. What is the optimom EGT reading for the gn?

There are too many variables to say what an optimum EGTwould/should be. I can only give you examples on mine. When running at the track (high boost/timing/race gas) I would hit 1650. While in street trim/boost, I would see numbers in the high 1400's during a limited WOT pull on the highway.

 

[jerrad]

Ok, thanks again Dave.