markybhoy86 Posted May 30, 2011 Share Posted May 30, 2011 Looking to upgrade the twin turbos for a bit more power but i want to keep the sequential setup and by doing that keeping the money as low as possible- i obviously wont be holding back on things that are important, just meaning ive not got the cash for going big single lol https://www.speedforsale.com/supraparts/speed-for-sale-bnr-jdm-gt28-style-hybrid-stock-twin-turbo-upgrade-p-635.html has anyone got, tried or heard anything about the twin upgrade i have linked. just want to know if there any good, any issues and if its worth the money? cheers M Quote Link to comment Share on other sites More sharing options...
Scott Posted May 30, 2011 Share Posted May 30, 2011 Another member got a set of these and has been getting good results. Last time I read an update he was aiming to crack 500hp. Not sure whether it's good or bad that we haven't heard any more about it though. The only trouble you will have is that you need all the supporting mods to go along with it. BPU is getting cloe to the limits of the fuel system so you would need to upgrade the injectors and fuel pump if you haven't already. Of course with the fuel comes the ECU so that would need to be factored in too..... next is the clutch. Basically you need to buy just about everything you need to to go single. I think the only difference is you can be pretty safe buying the lower end of the scale with regards to ECU as a bit of fudging should be good enough. Unfortunately there is no way to safely get 500hp on the stock system. Quote Link to comment Share on other sites More sharing options...
CanisLupus Posted May 30, 2011 Share Posted May 30, 2011 Honestly after reading over and over again i'd get rid of the sequential setup and get a small single with a cast manifold. You'll still have to upgrade other stuff that you have to anyways with those sequential upgrades. The positive thing is you will have a system which is a ton less hassle and has less possible things that can fail or affect correct working. Also i think cost wise a small single with cast mani will cost almost the same as an upgraded sequential setup. Quote Link to comment Share on other sites More sharing options...
spiderpigcity Posted May 30, 2011 Share Posted May 30, 2011 just add a 100 shot NOS Quote Link to comment Share on other sites More sharing options...
spiderpigcity Posted May 30, 2011 Share Posted May 30, 2011 Honestly after reading over and over again i'd get rid of the sequential setup and get a small single with a cast manifold. You'll still have to upgrade other stuff that you have to anyways with those sequential upgrades. The positive thing is you will have a system which is a ton less hassle and has less possible things that can fail or affect correct working. Also i think cost wise a small single with cast mani will cost almost the same as an upgraded sequential setup. :yeahthat: Quote Link to comment Share on other sites More sharing options...
johnny g Posted May 30, 2011 Share Posted May 30, 2011 The guy got almost 500bhp, but had very high EGT's. I'd save for a bit longer and get a single turbo setup. Quote Link to comment Share on other sites More sharing options...
bobapple Posted May 30, 2011 Share Posted May 30, 2011 As standard turbos from Mr T are £3K are these a good alternative for just replacing for BPU levels. Quote Link to comment Share on other sites More sharing options...
Robzki Posted May 30, 2011 Share Posted May 30, 2011 good question Quote Link to comment Share on other sites More sharing options...
bobapple Posted May 30, 2011 Share Posted May 30, 2011 Their slowly getting better .. Quote Link to comment Share on other sites More sharing options...
spiderpigcity Posted May 30, 2011 Share Posted May 30, 2011 whos gonna fit em. Ive done it twice and never again. Not unless your best mate is MR Tickle. Add another £500 to take em off and another £500 to put em on minimum. Its a Po* job to do. Quote Link to comment Share on other sites More sharing options...
Nic Posted May 30, 2011 Share Posted May 30, 2011 Looking to upgrade the twin turbos for a bit more power but i want to keep the sequential setup and by doing that keeping the money as low as possible- i obviously wont be holding back on things that are important, just meaning ive not got the cash for going big single lol https://www.speedforsale.com/supraparts/speed-for-sale-bnr-jdm-gt28-style-hybrid-stock-twin-turbo-upgrade-p-635.html has anyone got, tried or heard anything about the twin upgrade i have linked. just want to know if there any good, any issues and if its worth the money? As Scott says you would also need to upgrade the fueling and ECU to support the turbos. Without the supporting mods you'd need to limit the boost pressure, which would basically gain you nothing except extra lag. If you were to go to the expense of upgrading the fueling and ECU then you would get much better results fitting a small single kit. What is the current spec of your car? I'll assume it is already at BPU levels, rather than bolting on bigger turbos I would spend the money getting the best out of the stock turbos. Standard BPU modifications will give you around 380-400hp, with the addition of higher lift/longer duration cams and ECU (piggyback or standalone) 420-430hp should be possible. BPU gives considerable performance gains relatively cheaply, after that any gains start to get expensive. Quote Link to comment Share on other sites More sharing options...
spiderpigcity Posted May 31, 2011 Share Posted May 31, 2011 As Scott says you would also need to upgrade the fueling and ECU to support the turbos. Without the supporting mods you'd need to limit the boost pressure, which would basically gain you nothing except extra lag. If you were to go to the expense of upgrading the fueling and ECU then you would get much better results fitting a small single kit. What is the current spec of your car? I'll assume it is already at BPU levels, rather than bolting on bigger turbos I would spend the money getting the best out of the stock turbos. Standard BPU modifications will give you around 380-400hp, with the addition of higher lift/longer duration cams and ECU (piggyback or standalone) 420-430hp should be possible. BPU gives considerable performance gains relatively cheaply, after that any gains start to get expensive. nic is correct, emanage blue and fcd and cams and fmc will give you a good 400bhp on 99 ron Maybe uk injectors or if nic reckons you can get away with the 440cc jspecs thats even better but your duty cycle will be too high i think. I managed 420 out of mine but with lots of mods and ended up blowing the turbos. at that you are on the limit. Quote Link to comment Share on other sites More sharing options...
bobapple Posted May 31, 2011 Share Posted May 31, 2011 So are these turbos a good idea for replacing stock tubbies as they are a grand cheaper than the ones from MrT and I am talking just about parts not fiiting. Quote Link to comment Share on other sites More sharing options...
markybhoy86 Posted May 31, 2011 Author Share Posted May 31, 2011 It's not far off bpu just now just need a fmic and uprated fuel pump Whig I would have got if I was to upgrade the turbos anyway. I was wanting to stick with the sequence system just now and eventually get something special like big twin hks turbos or something similar-havnt made my mind up yet. So the verdict is- decent enough but complete the bpu setup and keep the extra pennies for bigger better things? Cheese for the advice M Quote Link to comment Share on other sites More sharing options...
CanisLupus Posted May 31, 2011 Share Posted May 31, 2011 Question is how laggy they are compared with the stock ones and how the Fuelling will be then EDIT: Yes i'd save the money for a decent setup if you want to go single anyway. Quote Link to comment Share on other sites More sharing options...
mellonman Posted May 31, 2011 Share Posted May 31, 2011 (edited) I have similar spec hybrids stage 3 cr turbos ,theres not much more lag, to fuel and make everything correct for them you need alot of stuff i didnt check top end leaning out with full boost on stck injectors which thinking about now i should of done just to know if i needed to,but i had ecu top feed fuel rail 650cc injectors (cos i could) fuel pressure reg injector dampener removed all for little gain over money spent, but its because i like the sequential set up EDIT: you could easy keep these turbos set with a lower boost setting and not have to change anything apart from going full bpu, i have only done the other mods to set the boost at 1.3 bar and keep it all safe. Edited May 31, 2011 by mellonman more information (see edit history) Quote Link to comment Share on other sites More sharing options...
Nic Posted May 31, 2011 Share Posted May 31, 2011 So the verdict is- decent enough but complete the bpu setup and keep the extra pennies for bigger better things? Yes if you're set on getting more power that's what I'd do, it's still going to be expensive though for relatively moderate gains. Personally I would either save the money or spend it on optimising the handling eg. brakes, suspension, wheels, tyres, etc. Do you have an electronic boost controller fitted? an EBC with 'gain' feature and boost mapping can make a big difference to how responsive the turbos are. Quote Link to comment Share on other sites More sharing options...
sdistc Posted May 31, 2011 Share Posted May 31, 2011 After following the Stock Twins Upgrade thread on SF.com since it started in 2007, I would assert that the upgrade is more cost-effective than simply replacing standard turbos from Toyota. However, even after 4 years of development the STU system is *STILL* troubleshooting - so unless you want OEM look for regulatory or personal reasons, a small single turbo will be simpler and easier to implement. Quote Link to comment Share on other sites More sharing options...
Thorin Posted May 31, 2011 Share Posted May 31, 2011 You don't need an FMIC or upgraded fuel pump to "complete BPU". BPU is essentially just raising the boost to 1.2bar. Yes a new fuel pump might be a good idea to replace a tired old one, but it's not required for "Full BPU". Same with an FMIC (and a good condition SMIC is more than good enough for a small single. Quote Link to comment Share on other sites More sharing options...
markybhoy86 Posted May 31, 2011 Author Share Posted May 31, 2011 The boost is sitting at 1.0 bar it's jspec turbos so didnt want to raise I any higher,the reason I said fmic a uprated fuel pump is only because it what's recommened ad I know if I said I was bpu people would say I wasn't yet lol Am gona keep my money aside just now then, i do like the sequential system but at the end of the day I know I wil just want more power Cheers M Quote Link to comment Share on other sites More sharing options...
Scott Posted May 31, 2011 Share Posted May 31, 2011 The boost is sitting at 1.0 bar it's jspec turbos so didnt want to raise I any higher,the reason I said fmic a uprated fuel pump is only because it what's recommened ad I know if I said I was bpu people would say I wasn't yet lol Am gona keep my money aside just now then, i do like the sequential system but at the end of the day I know I wil just want more power Cheers M You should crank it up Mark. 1.2bar is a different animal again. If the turbos pop (unlikely) you can get them fairly cheeply and you have the resources to have them swapped over in no-time. Quote Link to comment Share on other sites More sharing options...
Nic Posted May 31, 2011 Share Posted May 31, 2011 Yeah there's a big difference between 1bar and 1.2bar. If you want more power, I'd first fit a new fuel pump, check condition of the intercooler - renew if needed - then fit an electronic boost controller and up the boost to 1.2bar Quote Link to comment Share on other sites More sharing options...
markybhoy86 Posted May 31, 2011 Author Share Posted May 31, 2011 i didnt think you were supposed to run the Jspec turbos up at 1.2?cant really afford them poppin just yet either lol i have an electronic boost controller fitted but the other thing i noticed is when i was setting up the boost if i did go over 1.1 say, it felt like it misfired/staggered a lot, it never liked it lol Quote Link to comment Share on other sites More sharing options...
CanisLupus Posted May 31, 2011 Share Posted May 31, 2011 Colder Spark Plugs should fix that Quote Link to comment Share on other sites More sharing options...
Scott Posted May 31, 2011 Share Posted May 31, 2011 Yeah 1.2bar is the norm. What's Mark teaching you there Quote Link to comment Share on other sites More sharing options...
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