I am wanting to use bigger injectors for my 240 "95". my ? is will i have to change anyhting eles to do this, ie: pump or rail? If not what is the best way to go. i need new injectors for my car and if possible to upgrade now and ont pay twice then even better...

 

You can install larger injectors, but you'll need something to control them. (i.e. S-AFC). Otherwise, you'll be running WAY too rich.

 

but will i need a bigger rail and or a better pump???

 

It depends on what injectors you get. You can get some larger injectors that will slide into the OE fuel rail. And, depending on the age/use of your current fuel pump, it may be sufficient enough.... Otherwise, get a Walbro 255 lph kit...

 

throwing in more gas won't make it any faster. It'll make you have more trips to the gas station.
You'll need a 300zx fuel filter, 300zx/walbroro fuel pump, some way to control it, and perhaps a z32 maf.

Dr.

 

ok, but will the z32 mafs fit the 240's wiring harness???

 

First off what's this going on? KA-T, SR, CA?

To answer your question bigger injectors aren't your biggest bottleneck. The stock pump sucks and can't handle stock boost on any turbo Nissan motor. It should be first, with some kind of adjustable fuel pressure regulator. If you're looking to get more fuel from that setup, get some type of piggy-back fuel computer. After you run out of fuel using that system, then you search for bigger injectors.

 

it is just a stock ka24de out of a 95 240sx...but my injectors are bad and i am going to need to get some new ones soon. I was just wanting to know what my options were, but not spending more than 5-6 hundred...

 

Do you plan to boost it?

 

Its pointless to upgrade your injectors if your not going to boost in the future