I have searched, and there seems to at least several cases similar to mine. In Tuner Pro, is there a minimum value in the MAF tables that may be edited? For some reason it wont let me save changes on the order of a few hundreds (0.0X) of a g/sec. It will however save on the order of a few tenths (0.X) of a g/sec. Is this normal? Why would there even be a place for the value in the table if it cannot be edited? If this is normal, what is the resolution? (i.e. what is the finest / smallest adjustment I can save in the tables?)

Any help would be great!

 

I have noticed that too in most areas of Tuner pro. Timing, VE tables, MAF values..there seems to be a set value that you can adjust and cant fine tune from there.

Few hundredths is a tiny change. It will round your change to a nearest value or not save the change. I try to make timing around 26.5 deg at one spot and want to smooth it out to the next spot so I go with 27.1 and when i save it may show 26.6 and 27.3 or something like that. It rarely saves the values I spec, but changes to a value thats close.

 

Hmmmm..... I guess I will just have plug and chug to figure out what the limits are

 

What you are seeing is normal. It has to do with the resolution of the numbers and conversion. Take a SA value, in the BIN it will be from 0 - 255, as the actual value. With 0 being 0* and 255 being 90* of SA.

If you divide 90 by 256 you get 0.352 (rounded). Which means that a SA value can be changed in 0.352* increments.

Enter 0.5* for SA, and it will end up at .352*, with a BIN value of 1

Enter 0.6* for SA, and it will end up at .703*, with a BIN value of 2

Note that some values are held in two bytes. These values in the BIN go from 0 to 65535.

RBob.