cars running like crap losing fuel pressure when i go past 4000rpm ive change the spark plugs
You mean FRPS?
It's located on the fuel rail, driver side if i remember right with an electrical connector plugged in.
FPDM is the fuel control module and it's in the trunk behind the carpet on the driver side.
i dont have a fpdm then all i have is a relay:shrug:
probably your fuel system is return style since you got relay. :??:
here is the FPDM is stock returnless fuel setup
http://img.photobucket.com/albums/v409/BLK_03/STOCK FUEL MOD/JPicture001copy.jpg
return style is better so you won't worry about poping FRPS (Fuel rail pressure sensor). I think you have alternator issue since your pumps won'ts supply enough pressure above 4000. Check your alternator at idle and at 4000+ you should get around 14-13.8 V if less then alternator need to be replaced.