Pfc Larger Injectors Install

[stricnynel0s]

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 !

[R31Nismoid]

yes

[stricnynel0s]

just so we are on same page, yes i need a retune since i added new injectors, or yes i can drop them in and move car ? thnx in advance !!

[Mr. Untouchable]

YES IT NEEDS TO BE RE-TUNED.

[stricnynel0s]

meh, that was what i figured, i am actually changing ecu to the haltech platinum 2000, i just wanted car running so i can take it out of garage to work on the other one. thnx.

[JonnoHR31]

you can drive it, just dont go thrashing it

[Dose Pipe Sutututu]

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

[GTScotT]

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 just spend some time retuning em and it will all add to your experience.

[stricnynel0s]

i honestly just need it moving so it dosent get towed hehehe

[Dose Pipe Sutututu]

as long as you set your duty cycle and latency right the car will be movable, drivable.. it will just be rich on the top end (well my experience)

[MrStabby]

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.

[stricnynel0s]

cool info guys ! this saves me a lot of stress !!! i am going to take haltech out, install the new inj, do the correction and take it to where it needs to go