Jump to content
SAU Community

Removing Boost Restrictor

kikutaknight

By kikutaknight,
in Western Australia

 Share

Recommended Posts

kikutaknight Enthusiast

kikutaknight

Posted
Posted

On the cruise last night, Allen (aka 2LV8ETR) removed the restrictor from Scott's (aka reaper83) car for teh extra boost. 

I believe scott's is a rb26? is that dett? stock turbo? Afterwards he was saying how his stock pressure gauge was hitting max (+7mmHg). I believe +7 is equal to around 14.5 psi, right?

I'm interested in getting more boost out of my car also...but on the rb25det, stock turbo blows up if you push it much more than 12psi, right? what would removing the restrictor in my car do? is it safe?

also...i've ordered a turbotech manual boost controller which i'll be installing once it arrives. also want to know if i'll gain by having the boost controller and the restrictor out.

ty, ty.

Link to comment
https://www.sau.com.au/forums/topic/291921-removing-boost-restrictor/
Share on other sites
SKYRYAN Grand Master

SKYRYAN

Posted
Posted (edited)

I don't think you have a restrictor in the 25

And the boost could be a lot more than that. Don't use factory boost guage when you up the boost. Buy an aftermarket one or use the reading on your electronic boost controllers.

Edited by SKYRYAN
2LV8ETR Mentor

2LV8ETR

Posted
Posted

Only the RB26DETT has the restrictor in it near the PCM, RB25DET's don't.

As far as the RB25DET's are concerned, I wouldn't push one past 12psi safely.

In saying that, V8EATER was caning his RB20DET around pushing 18psi before we dropped the RB26DETT in, but it would only have been a matter of time before the turbo failed.

payback21 Community Regular

payback21

Posted
Posted
Only the RB26DETT has the restrictor in it near the PCM, RB25DET's don't.

As far as the RB25DET's are concerned, I wouldn't push one past 12psi safely.

In saying that, V8EATER was caning his RB20DET around pushing 18psi before we dropped the RB26DETT in, but it would only have been a matter of time before the turbo failed.

I personally think that it would of failed ages ago if i didnt have a electronic boost controller hooked up to it. Electronic boost controllers make a huge difference to the way the turbo spools, spikes etc

We will see how long it lasts when i finish my 4wd beach buggy with the old 20.

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

    • PranK
      Blue slip

      By PranK · Posted

    • GTSBoy
      Ethanol Content Sensor - Always at 11%?

      By GTSBoy · Posted

      But seriously, can we ask for the results of the "tip a bottle of metho into a nearly empty tank" experiment?
    • GTSBoy
      Blue slip

      By GTSBoy · Posted

      Hang on. Let me get this straight. The desire is to have coilovers, BC in particular, to be MORE comfortable on Sydney roads than stock suspension? Well, that's obviously not right. BCs have crude damping design at the very best, and typically hard spring rates. BC stands for Billy Cart. And then, the desire is to put in some shitty old worn out stockers, to get it blue slipped and then put the BCs back in? And then.....what? Not worry about getting pulled up by the Plod? Because you seem to have raised a worry about paying for engineering (which actually does solve all your legality problems) and still getting pulled up.... but the only problem there is that if/when that happens you have to show your paperwork at the inspection station. Whereas, if you just swap in borrowed shitty old stockers to get it slipped now, and then you get defected in the future, you have to go find more shitty old stockers then too. You course of action looks like this set of options: Buy brand new stock type dampers, and springs. probably cost a bit more than $1k all up, but will last for the remaining life of the car. Put them in, pass inspection, drive on them forever more. Hell, they could even be really nice Bilsteins and Kings or other lower&stiffer springs if you wanted. Get the car engineered as is. ~$1k. Buy new Shockworks coilvers (or MCA) and also pay for engineering. You're spending a lot more here. But these will be the best things that you could drive around on.
    • Dose Pipe Sutututu
      Blue slip

      By Dose Pipe Sutututu · Posted

      Might be worthwhile hitting up Facebook's groups, I know most of them contain terrible people and scammers - however you might be able to find someone that's in Sydney with factory suspension you could purchase and/or hire. Just do not send any form of money anywhere, in person cash only.
    • Stringycheese
      Blue slip

      By Stringycheese · Posted

      Thanks @Duncan Ride height is fine. I think it's almost stock tbh. Happy to share a pic. I don't actually have a regular mechanic as haven't lived in Sydney too long. Could you or anyone recommend any shops in Sydney?
×
×
  • Create New...