what is the difference between peak and hold, and saturated injectors? what would be best for my app? 90 teg with revhard stage 2 turbo kit. walbro fuel pump,aem cam gears,fpr, and fuel rail. obd-1 conversion, chipped p28 ecu. couple other mods that i don't think are needed to be listed. i have agreat deal in front of me but i don't know what style injectors i need. please help.