Jump to content
SAU Community

Rb30 25 Neo Build

lcxu105

By lcxu105,
in Engines & Forced Induction

 Share

Recommended Posts

lcxu105 Proficient

lcxu105

Posted
  • Author
Posted

Dropped off the bottom end today to the machine shop. Getting hot tank acid wash bored honed tunnel squared to deck crank nitrated oil galleries cleaned grub screws fitted to crank. Crank modified for 25 oil pump ballanced and a few other things done.

  • Replies 73
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

lcxu105
lcxu105
KiwiRS4T
KiwiRS4T

9.6:1 would be great.

lcxu105
lcxu105

Have been speaking with Matt today. Looks like I will be staying with the Nistune set up. Unless I have problems. Thanks for the input guy's.

Posted Images

  • 2 weeks later...
lcxu105 Proficient

lcxu105

Posted
  • Author
Posted (edited)

I have been looking at the oil restrictor threads on here and from what I can make out I need to block off the rear feed in the block and put a 1.5mm in the front one. Car is mainly for street use with the odd track day. Or would I be better off with 2x 1mm feeds or 2 x 1.25mm?

Edited by lcxu105
KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Well your call but 2x 1.0mm gives slightly less flow than 1 x 1.5 but has the security of two feeds instead of one (in the hopefully unlikely event that one gets blocked). On the other hand 2 x 1.25 flow a LOT more than one 1.5 (don't forget you can buy them from me unless you have a better source).

  • 5 weeks later...
lcxu105 Proficient

lcxu105

Posted
  • Author
Posted

Well been a while since I've done anything else. Its going to be a long build. Pick up arp head studs tomorrow. I have a new inlet and exhaust gasket now waiting. Machine shop is making slow process but not worried as I told them I don't want it back until about May June. Have been told that the Nistune won't be able to handle the setup as will have to much air flow for the airflow meter. Will have problems with it stalling. Waiting for Matt from Nistune to get back to me. Worst case I'm up for a new ecu. Any suggestions?

GTSBoy Grand Master

GTSBoy

Posted
Posted

Have been told that the Nistune won't be able to handle the setup as will have to much air flow for the airflow meter. Will have problems with it stalling. Waiting for Matt from Nistune to get back to me. Worst case I'm up for a new ecu. Any suggestions?

Adaptronic.

Whilst Adaptronic or any other aftermarket ECU are perfectly valid suggestions, it is not true that you can't use Nistune because of having too much air flow for the AFM. You can put a Ford Lightning AFM onto it - Nstune can handle it. You can put an R35 GTR AFM's sensor into a 6" pipe and measure 3000HP worth of air if you want to. There's not really any limits from that point of view. The main limit with Nistune is lack of extra functions and sometimes the problems where the stock ECU's self protection behaviours get in the way of tuning more extreme engines. Sometimes there are ways around them, and sometimes there are not. Sometimes the ways around those problems get found before, during or after your build/tune. Sometimes they don't.

iruvyouskyrine Grand Master

iruvyouskyrine

Posted
Posted

I was in the same boat last year. Loved the nistune just the AFM was a little annoying with my intake setup as I am running a 4" pipe. Talk to Matt about a mob over in the U.S that does specialty AFM's. It was what I was going to run as it was perfect for my situation and Matt has already integrated them into nistune.

I have a topic on here about it, search and you shall find.

  • 2 weeks later...
  • 2 weeks later...

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Boost cut after swap(RB25DET NEO) R34

      By GTSBoy · Posted

      Don't even try to run it on the stock ECU if you're going to have the boost controller bring boost above ~10 psi. I've already told you that. If you use the Nistune ECU, you will need to CAREFULLY read the available documentation for Neo tuning, and read some threads on the Nistune forums, to discover the various things you have to do to prevent the ECU from going bananas when the boost is too high. The is a table associated with th boost sensor that must be modified to prevent it from shitting the bed. This is just one of the things that you will need to do to the tune in Nistune, because the Neo turbo ECU will be expecting to see a number of things (such as the TCS) that are not there, and you have to block the DTCs on those. It is totally not surprising to me that you are having the problems that you are, but the solutions to these problems have been known for >15 years. So just get it done.
    • dyl33
      VOLK RACING GTC CENTRE CAPS

      By dyl33 · Posted

      Centre caps $250
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      Hi. Sry iam not a mechanic and iam not at the car atm so i dont know 100% but they told they measure those and even try to change those. AFM they have two. Coils are new a they have my old one too. Plugs too. ECU...we have 25 NEO stock and Nistune 25 NEO.   But i dont know if any one those could be the problem and why/if/what can cause this, Only thing they did not check is fuel...but that walbro 255 is new(like 1,5 years)... That fuel pressure gauge idk...but i let them know Any suggestions?   EDIT: how can they know if it is like you say he ECU pull power when it reaches a specific boost level that is too high? Tha car has boost controler
    • Duncan
      Boost cut after swap(RB25DET NEO) R34

      By Duncan · Posted

      Can you clarify what you mean by boost cut, do you mean it misfires both when under load (driving) and when stationary and out of gear? Or does the ECU pull power when it reaches a specific boost level that is too high (boost control issue)? Does it occur at idle with no throttle? When you say "the ECU is OK", what ECU is it and why do you think it is OK? Have you used the NEO ECU, and if so do you have a MAP sensor attached? Same for the AFM, why do you think it is OK? Do you have any way to put a fuel pressure gauge on it (even just a mechanical one between the fuel filter and fuel rail)?
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      Hi.. Just another problem. So maybe you can help. I(my mechanic) done swap from my RB20DE NEO to RB25DET NEO. Everything is OK but we have a boost cut. Coils/Plugs are ok...AFM is ok. ECU is ok. I have Walbro 255 but it "changed" sound few months ago(you can hear it ouside) you did not hear that when it was new(maybe faulty?) Sooo...what now? What can cause this boost cut? It is even when you standing still...
×
×
  • Create New...