hey, im going to buy a nitrous kit for my 99 SS. so far i have a racetronix 255lph pump in it, and i plan to get injectors, a 150 wet shot with longtubes and a dumped x. my question is, what size injectors would be the best size? and what kit would you all reccomend? i want to take into account the ease of installation mostly. price, too. also, should i get some tuning software like EFI live or LS1edit? i have a pretty much stock ss right now minus the fuel pump, so what would be everything i need to safely run a 150 shot? short of forging the motor, etc. Thanks!!

 

would it help a lot to go 42lb injectors? and can i get away with something cheaper than LS1edit or EFI live?

 

i am running a dynotune 150 shot on my 03 c5 with just a upgraded fuel pump and heads and cam i still got the stock injectors. the shop that tuned my car alls they did when they added the nitrous they just changed the timing on the car and that was it pretty simple took them like 5 min.

 

i have stock injectors and i spray a 250 shot.. i have a nos kit and it was very very easy to install..

 

If your running a wet shot on a basically stock car, than your stock injectors will work just fine. Upgrading the pump is basically all you need, and you've got that covered so you should be good to go. You may want to get a wideband just to check and make sure your A/F is good. Once you add the headers it probably wouldn't be a bad idea to get a tune and make your final tweaks, but as it sits now you should be good on the stock tune

Harris SpeedWorks has a great selection of kits at a VERY competitive price and the instructions they send are some of the easiest to understand that I have EVER seen. And since they are a sponsor here it is very easy to get ahold of them if you have a question. Matt usually responds to my PMs within a matter of minutes.

 

the car also has 137k miles on it. does that change anything? do i need NGK TR6s? what kind of wideband would you reccomend for a 150 shot?

 

I have HSW kit and like it a lot. You should do at least some TR6's or maybe some TR7's to be safe.

 

what kind of tuner would be appropriate for this? can i just use a handheld tuner or do i NEED to get ls1edit or EFI live? it just needs to be able to pull timing and monitor my A/F right? which tuner should i be looking for?

 

let me put it this way. i want to be able to run NA on an NA tune, then be able to arm the nitrous, and switch over to my nitrous tune. Is that possible? and if so, which tuner would be the best? if at all possible i would rather not use something where i need a laptop, because i dont have a laptop and i would have to use one of my roomates'. Thanks