millersta

iTrader: (2)

ive had nitrous on my car for about a year now and the biggest shot i ran was a 125. my car is a 99 t/a (147000mi runs great) with rear suspension (stock shocks and springs) lid/filter,3.42 gears (3.73's soon have to rebuild that rear) and a halo dry kit from nitrous outlet. i will be putting on headers and exhaust, 3200 circle-d converter. my question is what do i need to run a bigger shot safely .

YURVIEW

iTrader: (127)

what safety features do you currently have?? ie.. timing controller, shut off controller, window switch, etc. what is "bigger"?? how much are you wanting to spray??

millersta

iTrader: (2)

all i have now is fuel pressure saftey switch im looking to run any where from a 150 to 175

itsslow98

iTrader: (18)

fuel pump and most likely injectors at least

YURVIEW

iTrader: (127)

yea definitely Fuel pump and injectors since u are running dry kit, a timing retard device (ex. ls1 timing tuner, 2 degress per 50 hp of n2o is the recommended "safety"), your stock transmission would thank u for a window switch (device that activates n2o between certain rpms). and dont forget that the rod bolts in our cars are the weak leak.... they say they can only take around 500-550 hp. (i believe).

millersta

iTrader: (2)

i use a momentary switch not a wot so i controle when i spray and its never under 3000rpm

millersta

iTrader: (2)

what fuek pump do u guys suggest and what size injectors

ICRAZY6

iTrader: (68)

Are you tuning your car or someone else? If someone is doing it they should be able to tell if your maxing out your injectors or not. Also, you'll need a step colder plugs.

YURVIEW

iTrader: (127)

a 255lph pump should do ya.... i recommend Racetronix and their hot wire kit!! not expensive, but as always there are cheaper. with your few mods, I'd say some 30lb or maybe 36lb injectors will be fine. 42lb are more popular, but would be too much for you engine right now IMO. (altho def room to grow). remember injectors are rated at 43.5 psi fuel pressure. we run 60psi. so that will up the rating of the injectors.......
ie. 30lb = 35lbs, 36lb = 42lbs, 42lb = 49lbs
here is link to sticky to equations that can help you determine injector and pump size
https://ls1tech.com/forums/fueling-i...ump-chart.html

millersta

iTrader: (2)

i have one step colder than stock as per N O recomendations and i would like to get all my mods done before the tune so i dont have to get it done twice