injector and fuel pump Q's

[Damn 2nd Gear]

i heard that N/T have 270cc injectors but im not sure of the pump size. basically im thinking of putting in some slightly larger injectors and getting a safc and a pocket logger to tune the fuel a bit better. i was talking to a friend with a modded teggy and he said that after headers cam gears and intake/exhaust nad cams his car was running pretty lean but after getting some slightly larger infecters and a safc he was able to get a noticable amount of more power past 5000rpms when his vtec kicked in. i believe its a GSR and he calims to have put in 450cc and advises me to do the same. but im thinking maybe 350 would suffice max. i know that it wont benifit my set at the moment, but from what the previous owner told me its still got the original injectors in and thats with 115,000 miles. i figure i can pick up a safc off ebay and maybe the injectors too for a decent price. any advice on waht i should do?

 

[Doug99RS]

You will be able to put on quite a few mods before you will need injectors and an AFC. Larger injectors won't help you at the stage you're at now and will more than likely hurt more than help. I recomend getting the logger now and start to monitor things like o2 readings, timing, and temps so you know what "normal" is. Once you start adding alot of mods you will probablyhave had enough time to research what things are needed and what aren't.
Hold off on the fuel stuff, get the logger.
Doug

 

[Ralli///Art GS]

I agree with doug on that one. I have 170K on my car and the stock injectors. I also use a 75 hp shot of N20 and the injectors are fine. A fuel pump would be needed before injectors. So start with the fuel pump out of a turbo car. If you have enough mods on your NT to require engine management and bigger injectors i'd be very suprised. Lean is where the power is, dumping a ton of fuel in will run you very rich and you'll make less power. You need to get the happy medium. With the logger you will see your duty cycle for the injectors, if it's up near 85%-90% then you need to upgrade, but otherwise I'd spend the money elsewhere.