In tunerpro if you need to set the engine cid constant how do you calculate the correct value? There is a formula conversion = 0.275039*x. This is suposed to be cid of one cylinder however when you do the math 355/8= 44.375 and multiply that by 0.275039 you get 12.204. After downloading the new bin that constant is set at 6.7 so what gives?

 

Which XDF file?

RBob.

 

OE_TPV5_V250

 

Input the cubic inchs of displacement of a single cylinder and save. The conversion is between your input and the BIN value, no need for you to do any conversion.

RBob.
.

 

I opened another bin, and the way that cylinder displacement reads in that wa correct for the 7.4 liter i opened however when i got to a 5.7 4l80e bin and open it the value is only 6.7 not 44 in cid

 

I don't know, maybe there is more too it then that.

RBob.

 

so just for giggles i put factory memcal back in and i can only go around 20 mph it is very weak i dont understand what is goin on with this truck. i know the mechanicals of engine are tip top condition. can someone please send me the correct info i need to load in this chip? ecm is 16197427 bnkm 5.7 tbi 4l80e trans manual t case shift.