Jump to content
SAU Community

Recommended Posts

hi all

i have a RB20DET with stock turbo which i want to upgrade to something similar to a HKS2530 etc...

i have a fuel pressure regulator, 600hp walhbro fuel pump, 440cc GTR injectors, 3.5 inch exhaust, and FMIC. i am going to get the new turbo and a Z32 AFM installed and get my ecu re-mapped. i was wondering would there be a major difference if i kept the 440cc injecotrs in or should i upgrade to 550cc injectors? what sort of difference in power (kw) would there be if any? just guessing obviously....

any info on which way i should go would be greatly appreciated.

thanks

chris

Link to comment
https://www.sau.com.au/forums/topic/129396-performance-question/
Share on other sites

Why would the bigger injectors give you any extra power? As long as the GTR ones can flow enough to get the right amount of fuel in, there's no point in upgrading again? Maybe decreased fuel efficiency?

As always, correct me if I'm wrong...

oh... :)

i was always under the impression that i needed bigger injectors to get bigger power figures...

hence why i thought if i put 550cc injectors in i would get a bigger power figure instead of the 440cc

airflow makes power, not fuel. you need more air into the system to make more power. once you put in more air, youll need to add in more fuel, otherwise youll max out your injectors. so no injectors wont add any power, but will allow your system to safely run more

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...