I have a chevelle with a caprice LT1 and PCM installed and would like to upgrade to the F body MAF sensor. I believe it is going from a 3" to a 3.5" MAF. I have tunercat. What kind of changes are needed programming wise to change to the larger MAF? The impalaSS site crashed and lost all of their old posts, so there is no info there on what is probably a common upgrade. Can anyone here help?

 

You just need the maf calibration tables from an fbody file so you can copy them over.