Jump to content
SAU Community

Recommended Posts

Ok i have a power fc, i used paulr33 excellent faq and i know how i need to correct for the larger injectors i have (1000cc) but do i need a retune one i install them or no ? i am changing NOTHING AT ALL but the injectors, no more boostr nothing, i do have a larger turbo i will be installing, but right now i just need car moving any advice ? and of course once i install the larger turbo i will be getting it tuned !

Link to comment
https://www.sau.com.au/forums/topic/305905-pfc-larger-injectors-install/
Share on other sites

Hook up a wideband O2 and just keep an eye on the A/F, I find with larger injectors from factory it just richens heaps on full load.

but if you're driving the car under 4000rpm you should be fine provided it's not stupidly lean

just imagine the injectors are physically bigger. they work off the same voltage as your old ones so all that changes is pulse timing and width. so if you have gone from say 500s to 1000s, at the exact same tune state they will literally run twice as rich.

the most common mistake i see with injectors is people thinking that they could just put a bigger set and not need to do anything else, that and adding an FPR can fix anything.

its all a learning experience, your doing well mate :P just spend some time retuning em and it will all add to your experience.

Since you will have setup the PFC to cope with the new injectors, the tune should be fine for driving between workshops (no boosting). If cold start/cold running is not ok then something is amiss (for example you didnt enter the correct latency when updating the PFC)

You may even find its ok without a retune, but you need to verify that on the dyno first.

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

    • Hi all,   long time listener, first time caller   i was wondering if anyone can help me identify a transistor on the climate control unit board that decided to fry itself   I've circled it in the attached photo   any help would be appreciated
    • I mean, I got two VASS engineers to refuse to cert my own coilovers stating those very laws. Appendix B makes it pretty clear what it considers 'Variable Suspension' to be. In my lived experience they can't certify something that isn't actually in the list as something that requires certification. In the VASS engineering checklist they have to complete (LS3/NCOP11) and sign on there is nothing there. All the references inside NCOP11 state that if it's variable by the driver that height needs to maintain 100mm while the car is in motion. It states the car is lowered lowering blocks and other types of things are acceptable. Dialling out a shock is about as 'user adjustable' as changing any other suspension component lol. I wanted to have it signed off to dissuade HWP and RWC testers to state the suspension is legal to avoid having this discussion with them. The real problem is that Police and RWC/Pink/Blue slip people will say it needs engineering, and the engineers will state it doesn't need engineering. It is hugely irritating when aforementioned people get all "i know the rules mate feck off" when they don't, and the actual engineers are pleasant as all hell and do know the rules. Cars failing RWC for things that aren't listed in the RWC requirements is another thing here entirely!
    • I don't. I mean, mine's not a GTR, but it is a 32 with a lot of GTR stuff on it. But regardless, I typically buy from local suppliers. Getting stuff from Japan is seldom worth the pain. Buying from RHDJapan usually ends up in the final total of your basket being about double what you thought it would be, after all the bullshit fees and such are added on.
    • The hydrocarbon component of E10 can be shittier, and is in fact, shittier, than that used in normal 91RON fuel. That's because the octane boost provided by the ethanol allows them to use stuff that doesn't make the grade without the help. The 1c/L saving typically available on E10 is going to be massively overridden by the increased consumption caused by the ethanol and the crappier HC (ie the HCs will be less dense, meaning that there will definitely be less energy per unit volume than for more dense HCs). That is one of the reasons why P98 will return better fuel consumption than 91 does, even with the ignition timing completely fixed. There is more energy per unit volume because the HCs used in 98 are higher density than in the lawnmower fuel.
    • No, I'd suggest that that is the checklist for pneumatic/hydraulic adjustable systems. I would say, based on my years of reading and complying with Australian Standards and similar regulations, that the narrow interpretation of Clause 3.2 b would be the preferred/expected/intended one, by the author, and those using the standard. Wishful thinking need not apply.
×
×
  • Create New...