Fulcrum2000 Posted February 14, 2018 Share Posted February 14, 2018 Hi All I know there is some debate over whether you need a Boost Controller to get the very best out of BPU I am in the 'you do' camp and am therefore going to buy one tomorrow as I am collecting all the parts to have it done in a one shot deal. With that in mind I am going for the Greddy Profec - the newest model with only a tiny OLED gauge in the interior and much of the gubbins under the bonnet - so then I fit the 1 bar restrictor ring to my JDM 93 and manually up boost with this to 1.2 and I am at the safe limit with an AFR guage just in case. All that said, before I go and buy this fairly pricey bit of kit, has anyone fitted one, is it the best option for a BC for BPU? It has rave reviews and seems to be the easiest to fit by a mile, but I wanted to know if anyone had any thoughts. It is also the one WB include n their upgrade kit so i figure thats a good sign too. Quote Link to comment Share on other sites More sharing options...
Burna Posted February 14, 2018 Share Posted February 14, 2018 Never used it myself, but from what I've read it's basic, and I've learnt over the years that just because everyone raves on about a product/trader/mod, it doesn't mean its the best option, as most don't know what they are on about and just follow like sheep. The HKS EVC boost controllers and the Blitz icolour ones have a lot more functions etc... But I've a couple of the HKS EVC ones now, 5 & 6, and do I use all the mapping functions and fine tuning options to get the most out of it? No lol No I don't, as I've been too lazy to mess around with it and just turn up the boost and go If the Greddy ones does the job and is user friendly to use, which I've been told it is by a friend, then that could be a very good option, and one I'd consider researching if I was fresh to BC and looking for one, but the longer in the tooth I get, I find my opinion swaying to the option on a J-spec of just fitting the restrictor ring to control the boost and just enjoy it and not worry, it's simple and works, and I know a member who's a very close friend and has done this for years and the car shifts at a very quick pace no problem Is it really worth fitting a BC to to ring out that tiniest bit of extra boost, and push the turbos to their limit? I no longer think so. By the way mines a UK spec so only option to raise the boost is either a bleed valve or BC, or I would have probably just gone with a correct sized restrictor ring if I had a j-spec. Fulcrum, just ask around, speak to tuners, to experienced members, and then make your own judgement on what you think is the best option for you mate Quote Link to comment Share on other sites More sharing options...
Fulcrum2000 Posted February 14, 2018 Author Share Posted February 14, 2018 I think its worth it in many ways as what a lot of people dont consider is it is kind of a flip flop option, so if you just dont have it on it stays at a nice normal 1 bar with the restrictor safe for all temperatures as I hear some people get real close to topping 1.2 on really cold days and then when you want 1.2 on a real warm day you can crank it up. This is my understanding anyway and the way I would use it would probably make the car much safer I hope? I bought a 93 Supra because I wanted one of the very oldest and I knew I could give it everything it needed to keep going and thats always been my train of thought, I've already spent as much as it cost to buy doing it all up to be honest! Quote Link to comment Share on other sites More sharing options...
Rob W Posted February 14, 2018 Share Posted February 14, 2018 I run the HKS EVC 6-IR, personally I think it’s a great boost controller and far superior to the Blitz Boost controller Spec R and ID meter I previously was using. Have a read of this thread, more Page 2. http://www.mkivsupra.net/vbb/showthread.php?338583-EVC-6-IR-2-4-Installation/page2 Quote Link to comment Share on other sites More sharing options...
Scooter Posted February 14, 2018 Share Posted February 14, 2018 Pay close attention to this above. Rob's controller allows him to increase the boost on the 1st turbo too which is a massive plus. In my opinion a straight restrictor ring bpu is not 'all that' as the power in the first turbo zone is pretty much as a stock car, having more boost lower in the rev range gives a nice hike in responsiveness at normal driving revs/speeds/throttle openings. It also smooth's the transition from 1st to 2nd turbo which on a plain bpu can be harsh, the power coming on in a big hit however some people like that type of transition on a bpu - horses for courses, but if you have a bpu car running stock 1st turbo boost then I think you are missing out! Per the thread you also don't need a boost control to get a 1st turbo boost hike, just don't take the pee with the boost you subject it to! Quote Link to comment Share on other sites More sharing options...
Burna Posted February 14, 2018 Share Posted February 14, 2018 I think its worth it in many ways as what a lot of people dont consider is it is kind of a flip flop option, so if you just dont have it on it stays at a nice normal 1 bar with the restrictor safe for all temperatures as I hear some people get real close to topping 1.2 on really cold days and then when you want 1.2 on a real warm day you can crank it up. This is my understanding anyway and the way I would use it would probably make the car much safer I hope? I bought a 93 Supra because I wanted one of the very oldest and I knew I could give it everything it needed to keep going and thats always been my train of thought, I've already spent as much as it cost to buy doing it all up to be honest! I can see what you're trying to do, but is it really worth it trying to eek at that last 0.2 of boost on a warm day? And don't forget the boost changes in different gears, and as speed increases, and different load conditions, and I don't understand how you think it's safer with a BC sorry mate. But yeah, you seem adamant you wan't one, and yes the benefit is that it will hold it at 1.2 bar whatever the conditions, so go for it Rob's is a good link and read, and I can recommend the HKS EVC, but I still haven't gotten around to trying the different plumbing method that Rob has done, as I'm still loving TTC mode Quote Link to comment Share on other sites More sharing options...
Burna Posted February 14, 2018 Share Posted February 14, 2018 Pay close attention to this above. Rob's controller allows him to increase the boost on the 1st turbo too which is a massive plus. In my opinion a straight restrictor ring bpu is not 'all that' as the power in the first turbo zone is pretty much as a stock car, having more boost lower in the rev range gives a nice hike in responsiveness at normal driving revs/speeds/throttle openings. It also smooth's the transition from 1st to 2nd turbo which on a plain bpu can be harsh, the power coming on in a big hit however some people like that type of transition on a bpu - horses for courses, but if you have a bpu car running stock 1st turbo boost then I think you are missing out! Per the thread you also don't need a boost control to get a 1st turbo boost hike, just don't take the pee with the boost you subject it to! I hate that hard hit from turbo 1 to turbo 2! I could also feel the dip on transfer, which I also really disliked. I'm much happier in TTC, but I need to plumb it in like Robs, as that's how mine use to run on my old HKS EVC 4, and was a strong linear pull, which really pulled hard when boosting on the first turbo. I don't think the Greddy profec gives you the ability to do any of this though. Quote Link to comment Share on other sites More sharing options...
Fulcrum2000 Posted February 14, 2018 Author Share Posted February 14, 2018 Excuse my ignorance but what is TTC? Quote Link to comment Share on other sites More sharing options...
samdale Posted February 14, 2018 Share Posted February 14, 2018 True Twin Conversion. Run both turbos in parallel instead of sequential. It would be interesting to see a Dyno run of all 3 stages. Standard, Decat+restrictor, decat+restrictor+BC. In fact now I've thought about it, I might try and do just that. Quote Link to comment Share on other sites More sharing options...
Fulcrum2000 Posted February 14, 2018 Author Share Posted February 14, 2018 https://www.ebay.co.uk/p/HKS-Evc-6-IR-Electrice-Valve-Boost-Controller-45003-ak011/1952374929?iid=282255189004&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D20140122125356%26meid%3D0aa5bfba39624489a0b6661e0acf19cf%26pid%3D100005%26rk%3D2%26rkt%3D6%26sd%3D132470266299%26itm%3D282255189004&_trksid=p2047675.c100005.m1851 Is this the particular animal? Cheapest I could find the latest model Quote Link to comment Share on other sites More sharing options...
Burna Posted February 14, 2018 Share Posted February 14, 2018 https://www.ebay.co.uk/p/HKS-Evc-6-IR-Electrice-Valve-Boost-Controller-45003-ak011/1952374929?iid=282255189004&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D20140122125356%26meid%3D0aa5bfba39624489a0b6661e0acf19cf%26pid%3D100005%26rk%3D2%26rkt%3D6%26sd%3D132470266299%26itm%3D282255189004&_trksid=p2047675.c100005.m1851 Is this the particular animal? Cheapest I could find the latest model That's one of them yes Also the 4 and 5 will do the same. https://www.ebay.co.uk/itm/HKS-EVC-VI-6-ELECTRONIC-BOOST-CONTROLLER-VALVE-TURBO-BOOST-UK-SELLER-45003-AK005/323043639549?epid=1941672705&hash=item4b36e6c0fd:g:q8kAAOSwCJxaMsST Edit: I have this one, it's also labelled as the 6, and sometimes the 5, confusing I know lol https://www.ebay.co.uk/itm/HKS-EVC-VI-6-ELECTRONIC-BOOST-CONTROLLER-VALVE-TURBO-BOOST-UK-SELLER-45003-AK005/302610332085?epid=1941672705&hash=item4674fb39b5:g:UVwAAOSwLnlWm6FQ Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted February 14, 2018 Share Posted February 14, 2018 EVC here as well. The settings make the car much more tuneable. get the easy writer as well to link to pc. Takes patience but worth it. Quote Link to comment Share on other sites More sharing options...
Fulcrum2000 Posted February 14, 2018 Author Share Posted February 14, 2018 Ok you've convinced me it is in my best interests I have ordered the latest version brand new of the HKS EVC - are this mounted through the dash or do they have a little holder thing? I would prefer to have it dash mounted - also do they have the function to show in bar or just psi etc? I prefer bar. Spending money like water at the moment on Supe! Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted February 14, 2018 Share Posted February 14, 2018 Ok you've convinced me it is in my best interests I have ordered the latest version brand new of the HKS EVC - are this mounted through the dash or do they have a little holder thing? I would prefer to have it dash mounted - also do they have the function to show in bar or just psi etc? I prefer bar. Spending money like water at the moment on Supe! Mine is kpa. Not sure if it can be changed. Quote Link to comment Share on other sites More sharing options...
Burna Posted February 15, 2018 Share Posted February 15, 2018 Ok you've convinced me it is in my best interests I have ordered the latest version brand new of the HKS EVC - are this mounted through the dash or do they have a little holder thing? I would prefer to have it dash mounted - also do they have the function to show in bar or just psi etc? I prefer bar. Spending money like water at the moment on Supe! Kpa is the same as bar, just with the decimal point in a different position, I use kpa. Quote Link to comment Share on other sites More sharing options...
Fulcrum2000 Posted February 15, 2018 Author Share Posted February 15, 2018 Yes I found that out after I asked, my lack of knowledge is often staggering. What about AFR gauges, are they all created equal or are some about as trustworthy as Donald Trumps foreign policy? Quote Link to comment Share on other sites More sharing options...
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