Jump to content
SAU Community

Recommended Posts

post-34904-1192984452_thumb.jpg

Hi

does somone tryed to upgrade inlet manifold (On R33 RB25DET)? if yes please advice what modifications need for instalation and do i need ECU modification or changing injectors?

thanks in advance

Edited by guricha
Link to comment
https://www.sau.com.au/forums/topic/190177-intake-manifold-upgrade/
Share on other sites

I don't know if it was the plenum or anything. I've made the front facing plenum mod on my rb20det. And now stock turbo gets full boost at 2500rpm, where factory is 3000rpm. So who knows :D I like the response though. Recommend to everyone !

I don't know if it was the plenum or anything. I've made the front facing plenum mod on my rb20det. And now stock turbo gets full boost at 2500rpm, where factory is 3000rpm. So who knows :D I like the response though. Recommend to everyone !

i think u got better response as u have less piping with the front facing manifold

that is why i want to do it

sure after this manifold there will be less space from turbo to engine and responce of turbo should go higjt, but there is one problem i have no chance to install it here in workshop, so only i have left to do do it myself:) because i need some instalation manual or maybe somone have install it already and can help me with that

THAAAAAAANNNNNKKKS! am goin to install it after few days i bought it allready but when i see manifold i think that it was mistake to pay money for it:) thanks again hope i can install it and car will works properly:)

is there any manual for instalation? and does Ecu need modification?

Your changing the car setup - so of course its going to need a tune if you want the change to be workable.

On a stock ECU/turbo - IMO its absolutely pointless changing it and money is better spent elsewhere

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

    • Well, the trouble with that ^^ is: The configuration shown is absolutely a 1-way, not a 1.5-way. There is no way that a 1.5-way can be said to offer LSD action only on acceleration. If Nismo cannot get that right, then it is impossible to believe their documentation. That ^ is not a 1.5 way setup. That is a 1-way.   And so now I have allowed all doubts to flourish and have gone back to look at the MotoIQ video. I originally made the mistake of believing him when he said "this is a 1.5-way" at the ~6:10 mark. Because what he did was take the gear assembly out of the 2-way opening and just rotate it one place to the left to drop it into the 1-way opening. When he dropped it in there, the cam was "backwards" compared to the correct orientation shown in all other photos of that config. The flat shold have been facing the 1° ramp side of the opening, not the 55° ramp side. And I thought, "gee that's cute", but I was concerned at the time, when he put the other ring back on, that the gap between the rings looked like it was wider then in the 2-way config. And then I said a lot of things in my long post on Tuesday that could only make sense if the guy from MotoIQ was correct about what he'd done. BUT... I have now done my homework. I grabbed a frame of the video with the 2-way config, and then grabbed another with the "1.5-way" config, snipped out the cam and opening of that frame and just pasted it direct on top of the 2-way config. I scaled it so that the triangular opening was almost exactly the same height in both. AND.... the gap between the plates is wider with the cam installed in the triangualr opening backwards. That is.... it cannot go together that way. There would be massive force on the plates all the time, if you could even reassemble it.  So, My statement on the matter? The Nismo diff is actually only a 2-way and 1-way. There is no 1.5-way option in it, regardless of what they say. Here's a photo of a real 1.5-way ramp opening from Cusco (along with the 1 way option). And the full set of 1 through 2 way options from their racing diff, which is not same-same as what we'd typically be using, but...the cams work the same. A little blurry, but it comes from this Cusco doc, which is quite helpful. AND.... Cusco do in fact do what I suggested would be sensible, which is to have rings that do 1 and 1.5, and 1.5 and 2. Separately.  
    • Welcome Adam. Car looks great!
    • "With a 1.5-WAY, the LSD is effective only during acceleration."
    • Well it wasn't as easy as I thought.... and it also wasn't in my original manual which I did end up finding. They discuss the process in the Nismo catalogue though and it requires slight machining. Page 145.  NISMO PARTS CATALOGUE 2020
    • I'm an idiot, my intercooler is rated for 1000hp. I had clicked on the wrong product. Knowing the delta P would be nice, but I'm doubtful I'll do it. Now as for an EMAP, that would be great and I'll get around to it eventually but from my findings in my last post, I'm considering a turbo swap now. 
×
×
  • Create New...