i am ordering my nitrous kit right now and am trying to get my fuel system up to par to be able to handle the 150 shot safely. i am dealing with a certain budget right now though. my question is what is more important.... 42lb injectors or a fuel pump? i have a 99 SS M6 with....
lid
longtubes
dual cutouts
stock catback
upgraded clutch
rebuilt tranny
12bolt 3.73's
i have had it dyno tuned at 344/356 thru the 12bolt. like i said earlier im only looking to run a 150 shot max and i know i need to upgrade the injectors for sure, but how important is it for the fuel pump right now? i will eventually order it, but not right now. can my stock fuel pump handle the 150 shot?

 

you NEED the fuel pump. The injectors you'll need if it's a dry shot. If it's wet, just the pump.

 

Fuel pump!! If you have a wet kit your injectors are good

 

its a dry kit. what about on a 125 shot for now then?

 

your still going to need one on a 125 shot.

 

Some get away with the stock pump at that level. general concenus is the f-bod pumps to be good to about 450rwhp. easy way to tell is one of two ways, if you start small and have a good a/f ratio then start going bigger, you'll start seeing the a/f go lean in the upper rpm range, or at highest demand. another way is with a fuel pressure gauge, watch for droppong pressure at highest demand, means pump is falling off. get the bigger injectors in for sure, and you'll have room to grow running the 42's. Remember, good nozzle location is key to a great working dry hit/kit concerning lean spikes and/or running lean.
robert

 

ok well i will just wait to get the fuel pump and injectors together. thanx for the advice.

 

Just do a wet shot and not mess with the injectors.

 

i would have but i already bought the dry kit. anyway i am only using the kit for alil til i get my other setup. have to wait til september for that though, so i just wanted something to play with for now.