Jump to content
SAU Community

Rb25Det Ecu Upgrade

Hterrygqt

By Hterrygqt,
in Engines & Forced Induction

 Share

Recommended Posts

zebra Grand Master

zebra

Posted
Posted

do u need an aftermarket ecu or is the standard one ok?

700hp worth of turbo

yes, you need a tune.

whether that is simply a nistune board or a motec m880 is up to you

but now you will need bigger injectors etc or you will have a car slower than standard

zebra Grand Master

zebra

Posted
Posted

well...who knows how much more/less air a GT35 is flowing at 10psi compared to the little Hitachi the car came with.

might be running hugely lean at WOT.

if you just cruise around at low load/throttle I cant see there being a problem. give it the berries and expect to be looking though the for sale section for a new RB

GTSBoy Grand Master

GTSBoy

Posted
Posted (edited)

The compressor on the GT35 is MUCH bigger than the stocker. The turbine on the GT35 is MUCH bigger than the stocker. The wastegate actuator on the GT35 will NOT be set at the same 5-7 psi that the stocker is. So there is no way in hell that you will be able to successfully run that turbo on the standard ECU without wiring the wastegate open so you don't get any boost or being more disciplined in your right foot extension than most people are capable of.

Otherwise the advise of the above people is valid. You WILL need injectors and, assuming you keep the standard ECU and Nistune it, a Z32 AFM at minimum. You will also need a custom metal turbo intake (which should be obvious given the size difference between the stocker's inlet and the GT35's inlet).

Edited by GTSBoy

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

    • sunsetR33
      Replacing turbo water line - any recommendations or advice?

      By sunsetR33 · Posted

      One thing I can tell you is, do it properly the first time. If you encounter unexpected problems just let the car sit for a week or two if you have to get some other parts or figure stuff out.  I'd have said go and use as many OEM parts as possible but since you want to change the turbo later on a custom kit is probably the better choice. Since I have no experience with RB25 just compare parts diagrams and images before buying a line kit and it should be easy to see if it has everything you need. Amayama has very good parts diagrams and part number lists, that is what I used a bunch to figure out what I might need. And don't forget to plan ahead and possibly renew other stuff that's easy to get to while you're in there doing the turbo lines. Happy wrenching
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Update 4:   Hi all, good news. Engine is running and all the gaskets and seals seem to be working as intended. No leaks so far, even the JB Weld seems to hold. I flushed out the old coolant a few times and put in fresh coolant, not Nissan stuff, I decided to try the Ravenol Protect FL22, they claim it works for a wide variety of JDM cars and the opinions on it by some people were pretty good. And it has the nice poison green color! And man am I glad I bought a coolant system tester earlier this year, vacuum filling works wonders on this engine. I can definitely recommend this to anyone still doing it the old school way. All you need is compressed air supply. Will have to do a small test drive as soon as I can, I removed the gauge cluster again as the tacho needle was still bouncing around a bit but it was much better than before already.  I also found some cracks on all 4 tires inner and outer sidewalls. Apparently these tires should 't be parked on for extended periods or be kept under 0 degrees during storage, which I did not know. Clearly the previous owner didn't look into those details either, he probably bought them just cause they are cool semi-slicks. I'm just wondering how tf I am supposed to reach 30-80 degree tire temperatures on the public road consistenly, these tires were never going to work for my use case. I'll probably order Continental SportContact7 ones as these are the best allround summer tire available right now and I don't think I'll need anything crazier for now. Do let me know if you have experience with various tires and which ones you recommend.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      You have no idea how many goddamn boxes I received these past three months haha Most have been put to use by now though, luckily
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Not going to pretend I didn't do a bit of junky work this time around, but mostly due to the fact that some things I am not willing to spend days fixing right now, like wiring. I try to do most things properly the first time around.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Regardless of neglect or incompetence, fixing either is tedious and annoying. Most of the neglect on my car is definitely rust. I hope I can at least pass inspections later on and they won't fail the car due to slightly corroded hardlines. I was generous with rust converter and wax and it looks ok, most lines in the rear are hard to see properly anyways.  Definitely will test them though to make sure they don't rupture under pressure, in that case the car isn't going anywhere this year.
×
×
  • Create New...