Data precision has two components - displayed and magnitude of change. The magnitude of change relates to the constant (multiplier) being used to manipulate the raw Hex data.

As an example, 8 bit data in Hex may represent a maximum value of 256 in decimal. If the constant applied was 1.00, then decimal values of 1 through 256 could exist - and the precision would be the nearest whole number (no meaningful decimal place holder).

If the constant applied was 0.10, then decimal values of 0.1 through 25.6 could exist. The "true" precision would only be to one decimal place.

TC bases the displayed precision on the decimal value "step size" or true precision - and this cannot be changed.

EFILive and HPT will allow the user to set the displayed precision to multiple decimal places - however, this is for display purposes only, if the displayed precision exceeds the actual precision.

Ever notice when working in HPT, if you change the desired shift time of a T43 calibration by entering a desired value, after you reopen the file it will often have changed slightly from the value that you entered ? That is the result of the actual precision (step size) being applied to the value that you entered.

My two cents ... the answer is not to change TC, but to change the displayed decimal places when using the BlueCat Tool. You may have to import the data into Excel and either round or truncate the values.

I have never tried this ... I use EFILive for SD tuning of the Gen IV LSx engines - it is the most straight forward method.