I don't know what to call this, so I can't really search, but I know I've seen it before.

If you datalog, you get your A/F ratio. Using that, the base number for the cell you're tuning and then the number you want to target, how the ---- do you calculate you new cell number?

 

https://www.homemadeturbo.com/forum/...?topic=44648.0

Some good info to have right here so hang onto it.

 

Do it as a percent.

target afr/ logged afr = %

12.5/10.7 = 1.16-1 = 16


so that means you have to take 16% of the fuel from the map to get it to 12.5. This is assuming linearity.



OK not to confuse anyone. You can do this either way.. the way I posted or the link that was posted. I would follow the link because of more detail.

 

this is very helpful. i'm going to have to bust out the calculator in the next day or so here

 

That's it! Thanks!

 

Thats no fun. I just guess.