my fuel pump in 99 rcsb is taking a crap and im putting in my lq9 soon and was woundering if there was a need for a bigger fuel pump or should i just buy another stock one? also i live in so cal and have to pass the sniffer. if i tune out my rear o2's will they catch that? thanks

 

if your fuel pump is going bad and you don't plan on running any nitrous or FI or any other major plans you might as well buy another stock one or a Walbro in-tank aftermarket one if you want for fun.

 

do a search there are plenty of threads for the upgrading of fuel pump

 

you can put a Holley or Walbro 255 in your tank...minor modifications