Ok sounds like a supid question right? I know I've seen this somewhere. I dont think I'm talking hexidecimal here (or am I?)

What I'm trying to do is modify my MAF tables. I thought I was simply multiplying by 1.1 til I got to the fifth table and it's CF (or something like that)

Use the calculator in windows. Put it into "Engineering mode", and then you can put your value into it in Hex (that radio button clicked), do your adjustment, and then return to Hex mode to store the result.

I also have a utility somewhere that will take a table in Hex (or decimal) in Excel, and transpose it into Decimal (or Hex). Then adjust the table, convert back and export back into Tunerpro.....

Hex 1,2,3,4,5,6,7,8,9, A, B, C, D, E, F, 10
Dec 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16

When you count hex, it is always 9, A not 9, 10 and F, 10 not 9, 10

hex 10 = dec 16

hex CF = dec 207
hex FF = dec 255

FF/255 is a "limit of the ecm". Two spaces of hex numbers, if it was dec it would be a 99 limit. Hex FF = dec 255 = binary 11111111, like in a 8 bit computer.

Get on the net and search on "hex to dec" converter.

convert to dec do your math then convert back to hex.

The easy way (you'll maybe like it better, and was what my intent was when I said to use decimal in my old instructions) =
On the MAF Scalar words on the left window pane
Right click: Edit Item XDF Info
On the first page of that, go to "Output Type" and select "Floating Point" (not "hex digits"). Integer would also work on the MAF Scalars, because they have no conversion equation.

So, now MAF Scalar 5 should look like 204. Then, use a calculator to multiply 204 * 1.1 = 224. Type 224 in the box. Click save or enter.

Excellent! Thanks to all. Sure makes more sense when you have the rest of the story.