[lijoe]

i a have a 6pnd powerdyne s.c. and put 24pnd injectors do i need to change the fmu disk i would like to get a smaller pully for s.c. too.but i thought the 12:1 meant it would get more gas then a 10:1 so if thats true why do i see them selling 3:1 for 42pnd injectors.so i would like to know if i get the smaller pulley that gives you 9pnds of boost with 24 inj. what fmu should i getand is a 2.93 pulley the right one for that.and would i need a timing retard and fuel pump.

[GTRaptor]

Replacing the injectors to 24s requires you to recalibrate either your MAF or install a custom chip.

My advice is to REMOVE the FMU and install a custom tuned chip, this is the optimal way of doing it, else it will run like hell or have fuel mileage or detonation issues. I will also advice on a larger fuel pump.