I was wondering if somebody else ran into this problem. I was adjusting the Injector PW Correction vs. Battery voltage values based on the injectors' datasheet and came up with the following values:

Voltage uSec Value
6.4 : 3221.14
8.0 : 2056.71
9.6 : 1564.10
11.2 : 1211.94
12.8 : 978.55
14.4 : 800.80
16.0 : 836.13

Now I make the changes in the proper table, and save the changes and the bin itself. However, when I open the table again, the values are slightly off. I return these values:

Voltage uSec Value
6.4 : 3234.91
8.0 : 2044.71
9.6 : 1556.42
11.2 : 1220.72
12.8 : 976.58
14.4 : 793.47
16.0 : 823.99

I try re-entering my desired values and the tables change on their own again. I noticed that it does it to the VE and the Spark Tables as well. Does TunerPro have some sort of auto-smoothing feature? Or is it because of the way the bin is coded that it can only accept numbers based on coding sequence?

This is on a 730 ECM, 8D code.

 

You will find there are parameters that have a certain increment of change that is allowed.
It depends on the formula for that parameter. For example, VE changes in the
Low MAP/Low RPM area. Sometimes "zeroing out" the value allows me to input the value I want rather than modifying the existing value.

 

It's the "minimum resolution" effect, ya you get rounded to the nearest available point.

 

Ok, that makes sense. Thanks guys!