FITECH EFI TUNING tips, info sharing, ideas, settings, etc...

I have seen guys have so much noise interference with the Fitech I'm running 1200PA been on the car for two years, First off my 7531 MSD box is under the dash I'm running MSD pro distributor my coil is mounted on fender well. The Fitech does not control my timing just fuel I have tach input wired to gray wire on the box, 12v switched wire and the main battery wire and O2 sensor. I do have the battery cable hooked to engine block. The MSD box being inside car might be the biggest help.