O2 Corrections

[Lorenzo]

I did my first data log on my Big Stuff3 last night and the car felt ok. When I reviewed the log it said I had a -27.5 O2 correction. What does that mean? Is the car too lean or too fat?

 

[S2V6RACER]

I did my first data log on my Big Stuff3 last night and the car felt ok. When I reviewed the log it said I had a -27.5 O2 correction. What does that mean? Is the car too lean or too fat?

Lorenzo, I got your PM and I'll give you a call tomorrow and help you out best I can.

Basically the car could be running just fine, but it is pulling -27.5% out of the affected VE #. What really happens is in the shift points with that much correction it will most likely go way lean.

You need to know your desired A/F in that area of the map and the actual A/F in the log at the time.

 

[disco stu]

If it's -27.5, it's taking that out....too rich.

 

[S2V6RACER]

Lorenzo, I think I have you straightened out. I am happy you dropped over .2 off your times the first time back out with the new tune. Let me know how you do the next time out.