Jpowys Posted September 11, 2004 Share Posted September 11, 2004 Hey guys, My r33 gtst is pretty much stock. I am just after a quick bang for buck cheap mod. I'm just after a single stage boost controller. I used to have a s13 and had a turbosmart dual stage on that. It sucked - it spiked so high. I know this is a problem with this type of controller. I have heard of controllers only spiking 1-2 psi. Does anyone know what these are? What they cost and where to get them? Cheers for any help lads! Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/ Share on other sites More sharing options...
Birnie Posted September 11, 2004 Share Posted September 11, 2004 I have the single stage T-piece Turbosmart boost controller, the one you adjust under the bonnet. Had it dyno tuned a few months ago and did not fluctuate more than 1psi. Got the print out at home. Really happy with it ! Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1008953 Share on other sites More sharing options...
Jpowys Posted September 18, 2004 Author Share Posted September 18, 2004 Thanks for the reply. Does anyone else have a view on what is a good single stage controller? The controller i had on my old car (s13 silvia) was also a turbosmart, it was a dual stage and i found that that would spike about 3-4 psi. Not very satisfactory. Would the single stage hold better boost? Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1017616 Share on other sites More sharing options...
Zahos Posted September 18, 2004 Share Posted September 18, 2004 I've played aound with SH!T LOADS of bleeds valves, flow control valves and crap lik thatm and best of the pneumatic type was the one in this article. BUT, the best mod you could do for boost is to get another wastegate actuator. I bought a wastegate actuator from an R32 for $50. The R32 wastegate actuator has a 10psi spring, and holds 10psi from 3000 - 3500 rpm all the way to redline! If I wanted 12psi now... I just need to bleed off 2psi raher than 7psi, and it would not spike as much... If you want to do it properly, find yourself an R32 wastegate actuator, or buy an adjustable one. Do a search on this, It's been covered plenty. Zahos Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1017630 Share on other sites More sharing options...
krzysiu Posted September 18, 2004 Share Posted September 18, 2004 Hmm my bleed valve holds 17Psi, tell me what u can tell from this dynochart. I also would like to know of a good boost controller because i simply cannot spare enough cash for a AVC-R or somthing like that Thx Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1017809 Share on other sites More sharing options...
Birnie Posted September 18, 2004 Share Posted September 18, 2004 Oh man, i wish i had that power Still stuck around the 160's, waiting to get an intercooler installed b4 i wack in the Power FC that's collecting dust under my bed....what a waste...hehe But, it will get there eventually Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1017830 Share on other sites More sharing options...
Jpowys Posted September 18, 2004 Author Share Posted September 18, 2004 Thanks for the help guys. Zahos, if i were to buy and fit the wastegate actuator from the r32, would i need to do anything else? Or would it automatically run at 10psi? I'm a little unsure on what you mean by "bleeding"? What you are then saying is that you can fit a single stage controller and up the boost only a little or a lot. Is that right? Thanks again! Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1017858 Share on other sites More sharing options...
Zahos Posted September 18, 2004 Share Posted September 18, 2004 It would run 10psi al the time... if you then used a single stage to bleed a few psi off, there would be less spiking.. R33 actuator has 5psi spring R32 has 10 psi spring a bleed valve has to bleed more off with R33 actuator to acheive same result... i just leave the R32 actuator and i dun bleed anything off. 10psi is plenty for me, as he car is a daily driver.... Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1017866 Share on other sites More sharing options...
Jpowys Posted September 19, 2004 Author Share Posted September 19, 2004 I think i got ya... Also, with the r33, if it has a 5psi sring in it, how is it that it runs at up to 7. Stock, doesn't it run at 5psi up to 5000rpm and then 7psi to redline? This doesn't quite make sense to me. Wouldn't this mean that the spring is a 7psi spring? Anyway, thanks for the help. I think i might go ahead and go with the r32 actuator. Is it a difficult job to change over? Cheers Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1018233 Share on other sites More sharing options...
Zahos Posted September 19, 2004 Share Posted September 19, 2004 R33 has a factory fitted boost controller. It starts to bleed air off at abour 5000 rpm. If you remove it, or disconnect it, you would only ever run 5psi... it is a very easy job, just can get fiddly, especially if you have large hands... Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1018262 Share on other sites More sharing options...
Jpowys Posted September 19, 2004 Author Share Posted September 19, 2004 Ok cool... So does that mean that if you left the factory fitted boost controller attached and changed the wastegate over to the r32 one, it would mean it would boost up to 12psi on high? Presumably it would be recommended leaving this controller disconnected, as 12 would be too high for a stock 33? Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1018294 Share on other sites More sharing options...
Kaido_RR Posted September 19, 2004 Share Posted September 19, 2004 at the moment im running a Greddy- Profec A - cost me around $300 or so its hold boost all the way up to 2bar, some dude is selling some ebc in the forsale section Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1018435 Share on other sites More sharing options...
hayes_666 Posted September 19, 2004 Share Posted September 19, 2004 No you cant the factory controller would think that it is already at 10psi as it has to monitor boost pressure, so wont even atempt to work,. Im going to use a Basic bleed valve with a solinoid valve plumbed into the bleed off pipe, and a basic adjustable pressure switch on the boost side so as soon asit reaches slightly over what i want it will close the bleed valve off untill it dropps or holds were i want it, the theory is good ad i belive due to the type of pressure switch i have it should work fine. Nathan Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1018460 Share on other sites More sharing options...
Zahos Posted September 19, 2004 Share Posted September 19, 2004 Ok cool... So does that mean that if you left the factory fitted boost controller attached and changed the wastegate over to the r32 one, it would mean it would boost up to 12psi on high? Presumably it would be recommended leaving this controller disconnected, as 12 would be too high for a stock 33? It might bleed more than 2psi, as at 10psi there is more flow... I don't think the R33 monitors boost and shuts/opens the solenoid accordingly, otherwise, people that have done the factory solenoid mod, would be getting spikes well above 7psi. just put the actuator on (R32), then disconnect the plug on he boost solenoid, and you'll be fine... Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1018637 Share on other sites More sharing options...
Jpowys Posted September 20, 2004 Author Share Posted September 20, 2004 I spose you would disconnect this by cutting the two wires (white and black) from the boost solenoid? Changing the actuator is a great idea though. I think i will do this. Anyone else have any experience with this? Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1020227 Share on other sites More sharing options...
Zahos Posted September 20, 2004 Share Posted September 20, 2004 why cut the wires? there is a plug right near it, just unplug it.. as for the hoses, leave those connected the way they are... Link to comment https://www.sau.com.au/forums/topic/50848-what-boost-controller-to-buy/#findComment-1020283 Share on other sites More sharing options...
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