Busemannen Posted July 16, 2017 Share Posted July 16, 2017 It's confusing to find a good EBC with capabilities to control both turbo's on my TT'96 JDM... Some of them seems to be discontinued while others were top notch a few years ago, but may have been outdated by newer EBC's. Can anyone share their view on this matter? Quote Link to comment Share on other sites More sharing options...
Frank Bullitt Posted July 16, 2017 Share Posted July 16, 2017 I believe the GReddy Profec is the one people seem to like as there is always a mad rush to buy them when they pop up for sale. Loads of controllers here - http://www.garagewhifbitz.co.uk/toyota/supra/electronics/boost-controllers-boost-cut-controllers.html?dir=desc&order=price Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted July 16, 2017 Share Posted July 16, 2017 Boost controllers control total boost from both Turbos through the sequential system, Don't think you can control each Turbo independantly Quote Link to comment Share on other sites More sharing options...
Busemannen Posted July 16, 2017 Author Share Posted July 16, 2017 Boost controllers control total boost from both Turbos through the sequential system, Don't think you can control each Turbo independantly It's possible on a few EBC's to control both turbo's... I think HKS makes one? Maybe Blitz's is capable too? Quote Link to comment Share on other sites More sharing options...
samdale Posted July 17, 2017 Share Posted July 17, 2017 Can't find the thread as I'm useless with the search, but have a look for "first turbo mod" or similar. Basically some people fit a bleed valve to get a bit more boost from turbo one and an EBC for overall boost from turbo 2 Quote Link to comment Share on other sites More sharing options...
Burna Posted July 17, 2017 Share Posted July 17, 2017 Have a look here for more info on the HKS EVC 6 install... http://www.mkivsupra.net/vbb/showthread.php?338583-EVC-6-IR-2-4-Installation&p=4224607&viewfull=1#post4224607 Quote Link to comment Share on other sites More sharing options...
Scooter Posted July 17, 2017 Share Posted July 17, 2017 Unless you have a uk spec I don't see much point in a boost controller, I favour the 1st turbo mod (I too am having trouble locating the thread) and a restrictor ring to cap the top end boost. OP did you or are you refitting Japanese or UK/Euro spec turbo's? Quote Link to comment Share on other sites More sharing options...
Scooter Posted July 17, 2017 Share Posted July 17, 2017 Found it! This modification will increase boost on the first turbo, I have it set so it gives 0.9 max on the 1st turbo and then my restrictor ring gives me 1.15bar. I suppose if you wanted to chance the turbo's at say 1.25 occasionally then a boost controller will allow this but beyond that I don't think they offer much else do they? http://www.mkivsupra.net/vbb/showthread.php?4620-All-top-end-on-a-tuned-uk-spec/page5 Is interferes with the 2nd turbo prespool so you don't want to play around too much or else the 1st turbo will get overboosted and the transition to both turbo's will be affected and the 2nd turbo not prespooled sufficiently. The 0.9-1.15bar I have as above gives a smooth transition and very nice low rev response/power. Quote Link to comment Share on other sites More sharing options...
samdale Posted July 17, 2017 Share Posted July 17, 2017 Good work! Am I understanding that right in that it bleeds off pressure from BOTH of those pipes? Would you have the same effect by using 2 bleeds valves or is it crucial that the bleed is the same on both lines? Quote Link to comment Share on other sites More sharing options...
Scooter Posted July 17, 2017 Share Posted July 17, 2017 I'll confess to not knowing exactly how it works! So stuck with the proven pipework setup as described. Once this pipework is in place though it's easy to just open the valve a tiny bit go and test, pull over and open it a bit more etc etc until it's where you want it. I didn't want to go too crazy just up it a little from the stock 0-6-0.7bar but keep a good transition to both turbo's. Quote Link to comment Share on other sites More sharing options...
Busemannen Posted July 21, 2017 Author Share Posted July 21, 2017 Unless you have a uk spec I don't see much point in a boost controller, I favour the 1st turbo mod (I too am having trouble locating the thread) and a restrictor ring to cap the top end boost. OP did you or are you refitting Japanese or UK/Euro spec turbo's? Sorry for beeing slow to reply... Is seems as Iv'e got eurospec turbos on a JDM car, .. Quote Link to comment Share on other sites More sharing options...
Busemannen Posted July 21, 2017 Author Share Posted July 21, 2017 Found it! This modification will increase boost on the first turbo, I have it set so it gives 0.9 max on the 1st turbo and then my restrictor ring gives me 1.15bar. I suppose if you wanted to chance the turbo's at say 1.25 occasionally then a boost controller will allow this but beyond that I don't think they offer much else do they? http://www.mkivsupra.net/vbb/showthread.php?4620-All-top-end-on-a-tuned-uk-spec/page5 Is interferes with the 2nd turbo prespool so you don't want to play around too much or else the 1st turbo will get overboosted and the transition to both turbo's will be affected and the 2nd turbo not prespooled sufficiently. The 0.9-1.15bar I have as above gives a smooth transition and very nice low rev response/power. Thx for info, It's BPU, but lacks boost control, so I have to get something in there, but I admit the time I am up in the high revs is only a fraction of the time I drive the car, so I'd like a good boost in the lower register ... Quote Link to comment Share on other sites More sharing options...
Scooter Posted July 21, 2017 Share Posted July 21, 2017 Thx for info, It's BPU, but lacks boost control, so I have to get something in there, but I admit the time I am up in the high revs is only a fraction of the time I drive the car, so I'd like a good boost in the lower register ... I'm the same, the upper rev ranges aren't always reachable for various reasons the low down boost/torque is noticeable all the time and worth having. Quote Link to comment Share on other sites More sharing options...
Busemannen Posted July 26, 2017 Author Share Posted July 26, 2017 So noone who would give some advise on witch controller to choose? Quote Link to comment Share on other sites More sharing options...
SteveC Posted July 26, 2017 Share Posted July 26, 2017 I use an AEM Tru Boost combined gauge/controller on my UK car. It's easy to set up and works very well - but I should add that I haven't experience of any other boost controllers. Quote Link to comment Share on other sites More sharing options...
Busemannen Posted July 31, 2017 Author Share Posted July 31, 2017 I use an AEM Tru Boost combined gauge/controller on my UK car. It's easy to set up and works very well - but I should add that I haven't experience of any other boost controllers. https://uploads.tapatalk-cdn.com/20170726/2687edf8ed7fe24d86388ee15b27d2a5.jpg Thx for your answere... But can it also boost turbo nr. 1? Quote Link to comment Share on other sites More sharing options...
Burna Posted August 1, 2017 Share Posted August 1, 2017 So noone who would give some advise on witch controller to choose? Thx for your answere... But can it also boost turbo nr. 1? You obviously missed post #6 then? Have a look here for more info on the HKS EVC 6 install... http://www.mkivsupra.net/vbb/showthread.php?338583-EVC-6-IR-2-4-Installation&p=4224607&viewfull=1#post4224607 Quote Link to comment Share on other sites More sharing options...
Rob W Posted August 1, 2017 Share Posted August 1, 2017 As above. The HKS boost controllers IMO are the ones to go for, far better then my old Blitz SBC ID Spec R with ID meter. I've updated that thread which Burna has linked in the above post with embedded pictures for future use if members need it. Quote Link to comment Share on other sites More sharing options...
Burna Posted August 1, 2017 Share Posted August 1, 2017 As above. The HKS boost controllers IMO are the ones to go for, far better then my old Blitz SBC ID Spec R with ID meter. I've updated that thread which Burna has linked in the above post with embedded pictures for future use if members need it. Thanks for sorting the pictures Rob, I'm hoping to try it soon, once I go back to sequential that is! Quote Link to comment Share on other sites More sharing options...
Busemannen Posted August 4, 2017 Author Share Posted August 4, 2017 You obviously missed post #6 then? I meant if AEM Trueboost were able to control the nr. 1? (The HKS controller, I've understood is able to boost nr. 1, but is that the only EBC that can do this? It's an expensive piece, but as I understand, gives a far better control over the whole boosting than even Greddy's type r EBC? Quote Link to comment Share on other sites More sharing options...
SteveC Posted August 4, 2017 Share Posted August 4, 2017 Thx for your answere... But can it also boost turbo nr. 1?As far as I am aware, all electronic boost controllers can only boost the No1 turbo on the Supra sequential twin turbo setup. Quote Link to comment Share on other sites More sharing options...
Busemannen Posted August 4, 2017 Author Share Posted August 4, 2017 As far as I am aware, all electronic boost controllers can only boost the No1 turbo on the Supra sequential twin turbo setup. Well, as stated above, the HKS EVC 6 can do both, and I think EVC 4 and 5 also are capable of boosting nr 1. turbo... Quote Link to comment Share on other sites More sharing options...
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