Rescale injectors Nistune how to?

[dyl33]

Hi,

Im going to be installing 1000cc injectors and don't want to get the car towed to the tuner.

The car already has a z32 nistune ecu and i want to rescale the injectors to be able to drive the car.

Just wondering what i need to do and buy to rescale injectors in nistune? i watched this @1m:20 m.youtube.com/watch?v=AUrGrBmo9kk is that all i need to do for z32? 

Will a ecutalk consult cable connect to nistune?

Thanks

[Rusty Nuts]

1 hour ago, dyl33 said:

Will a ecutalk consult cable connect to nistune

Yes it will

[GTSBoy]

The process is very simply described in the Nistune documentation.

[dyl33]

Ok thanks guys

[dyl33]

If im just rescaling the injectors do i need a afr gauge?

It should be fine to drive the 40km to the tuner after doing the injector rescale?

 

[Dose Pipe Sutututu]

you also need a Nistune license, and generally an AFR is very helpful however if you're babying the car the STFT should be enough to keep your car at stoich on cruise provided your stock narrowband works.

[dyl33]

Yeah i dont mind buying the nistune license if it saves not using a tow truck, its about the same cost. It would also be good to be able to idle, bleed coolant and check everything before dropping it off.

Edited August 27, 2020 by dyl33

[TurboTapin]

Just drive it slow and out of boost on your way to the dyno. 

[dyl33]

Do i tick - Adjust tb load scalers, Adjust ttp min/max limits and Adjust cranking tables 

When changing from factory 370cc to 1000cc bosch injectors and will i need to change the latency?

 

[dyl33]

After a little more research, i believe i do NOT tick Adjust TB load scalers and cranking tables. 

But i do tick adjust TPP min/max limits

Does that sound right?

Edited September 11, 2020 by dyl33

[GTSBoy]

That sounds right, but I'm sure it is very clearly described in the tuning guide.

[dyl33]

Yep it is described in the tuning guide, the above is what I believe I need to do. 

But it would be nice to double check with someone that has more knowledge on the matter so im not overlooking anything important. 

[dyl33]

Will i need to manually change the  injector latency?

I think stock rb25det 370cc is 0.53ms @ 14v and bosch 1000cc are 1.2ms @ 14v

Do i need to touch this? 

[Ben C34]

7 minutes ago, dyl33 said:

Will i need to manually change the  injector latency?

I think stock rb25det 370cc is 0.53ms @ 14v and bosch 1000cc are 1.2ms @ 14v

Do i need to touch this? 

Yes you should change it

[dyl33]

Thanks @Ben C34

Other thing before i go and do it today, should i tick crank enrichment tables? 

 it says for bigger injectors normally you need to lower the value by the % increase in injector size so the car starts without flooding?

 

[Ben C34]

1 hour ago, dyl33 said:

Thanks @Ben C34

Other thing before i go and do it today, should i tick crank enrichment tables? 

 it says for bigger injectors normally you need to lower the value by the % increase in injector size so the car starts without flooding?

 

That's my understanding

[dyl33]

Yeah that's what i thought but then in the nistune software it say, unticked(default) only use for small injectors

And is this link, he leaves it untick for i.d 1000s for rb25 http://m.youtube.com/watch?v=AUrGrBmo9kk

So not sure now

[Ben C34]

It's not like this a one shot deal, or that it will hit the engine. Just try it and see what happens. If no good do it with box checked etc

[dyl33]

Ok thanks mate , I'll see how it goes. 

[dyl33]

It all worked, bled coolant and drove fine. Only thing while driving it started to get a little intermittent idle hunt, hopfully thats just a small vac leak but all good i think.

Thanks