kikutaknight Posted October 14, 2009 Share Posted October 14, 2009 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 More sharing options...
SKYRYAN Posted October 14, 2009 Share Posted October 14, 2009 (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 October 14, 2009 by SKYRYAN Link to comment https://www.sau.com.au/forums/topic/291921-removing-boost-restrictor/#findComment-4879367 Share on other sites More sharing options...
2LV8ETR Posted October 14, 2009 Share Posted October 14, 2009 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. Link to comment https://www.sau.com.au/forums/topic/291921-removing-boost-restrictor/#findComment-4879385 Share on other sites More sharing options...
SKYRYAN Posted October 14, 2009 Share Posted October 14, 2009 Yeah running 30 psi... that gauge is still only going to go to +7. That's where the needle stops and can't go any further. Just a note for newbies, get a proper boost reading! Link to comment https://www.sau.com.au/forums/topic/291921-removing-boost-restrictor/#findComment-4879393 Share on other sites More sharing options...
kikutaknight Posted October 14, 2009 Author Share Posted October 14, 2009 ahah. i see. ty ty. i have an aftermarket boost gauge. so it's all good. ^_^ Link to comment https://www.sau.com.au/forums/topic/291921-removing-boost-restrictor/#findComment-4879483 Share on other sites More sharing options...
Niksmo Posted October 14, 2009 Share Posted October 14, 2009 electronic boost controller ftw, yeah they're alittle expensive but well worth the accuracy. iv got mine on two setting 9-10 on low and 13-14 on high. stock turbo Link to comment https://www.sau.com.au/forums/topic/291921-removing-boost-restrictor/#findComment-4879556 Share on other sites More sharing options...
payback21 Posted October 14, 2009 Share Posted October 14, 2009 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. Link to comment https://www.sau.com.au/forums/topic/291921-removing-boost-restrictor/#findComment-4880133 Share on other sites More sharing options...
mark660 Posted October 16, 2009 Share Posted October 16, 2009 http://www.skylinesaustralia.com/forums/HO...ost-t42895.html try this if u havnt already Link to comment https://www.sau.com.au/forums/topic/291921-removing-boost-restrictor/#findComment-4883976 Share on other sites More sharing options...
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