Chip does NOT control, the fuel pump or fuell pressure the.
If pump and pressure output have been checked, you need to check the
RAIL PRESSURE at the SHRAEDER VALVE.
A melted plug does NOT indicate a LEAN MIX SINGULARLY, it can also be caused because the plugs have the WRONG HEAT RANGE or that the engine has overheated.
What state of tune is the engine ?, what plugs are you using ?
tabetha