alex341 Posted March 31, 2013 Share Posted March 31, 2013 Some of you may have seen I put a post of of my Supra I bought in the newbie section recently. The car had a few running problems which are all sorted now. Its BPU spec and I had it on the rolling road last week to set it up and check the fueling. It made 350WHP but would only run 1bar of boost because the fueling leaned off after that. So I'm going to get an aftermarket ECU. Are there any ECU's that anyone can recommened or give me some advice regarding this. Also I will be looking into a single turbo conversion in the near future. Thanks in advance Quote Link to comment Share on other sites More sharing options...
SupraD06 Posted March 31, 2013 Share Posted March 31, 2013 (edited) If your planning on going single in the future, then i would save up and do it properly with a Syvecs ECU Have a read here: http://www.mkiv.co.uk/vbb/showthread.php?171619-2Bartuning-Syvecs-Ecu-s Edited March 31, 2013 by SupraD06 (see edit history) Quote Link to comment Share on other sites More sharing options...
Alex Posted March 31, 2013 Share Posted March 31, 2013 Some of you may have seen I put a post of of my Supra I bought in the newbie section recently. The car had a few running problems which are all sorted now. Its BPU spec and I had it on the rolling road last week to set it up and check the fueling. It made 350WHP but would only run 1bar of boost because the fueling leaned off after that. So I'm going to get an aftermarket ECU. Are there any ECU's that anyone can recommened or give me some advice regarding this. Also I will be looking into a single turbo conversion in the near future. Thanks in advance At 1 bar of boost the stock ECU injector driver opens fully and effectively panics. The 440's when clean will support about 400HP at the flywheel. So you are getting everything out of the fuelsystem that's possible and no ecu change will edit that. You've not indicated the AFR levels at all. But basically you don't want to run less that 11.7:1 at WOT (Wide Open Throttle) on full boost. If your system can't run up to 1.2bar without going dangerously lean I would say that part of the fuel system or the intercooler is tired. So, basically you've got lots to do before the ECU change. Quote Link to comment Share on other sites More sharing options...
Benjy Posted March 31, 2013 Share Posted March 31, 2013 Doesn't the stock ECU cut fuel at 1 bar boost? Hence the need for a FCD for BPU to allow 1.2? Quote Link to comment Share on other sites More sharing options...
safcdixon Posted March 31, 2013 Share Posted March 31, 2013 Doesn't the stock ECU cut fuel at 1 bar boost? Hence the need for a FCD for BPU to allow 1.2? Yeah that's my understanding too, I thought the 440's could be used too 1.2 bar? Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted March 31, 2013 Share Posted March 31, 2013 If your planning going single, invest in the syvecs! best ecu on the market and if your lucky to get Ryan G to map it then its win win Quote Link to comment Share on other sites More sharing options...
Benjy Posted March 31, 2013 Share Posted March 31, 2013 Alex, are you running a decat, rr/boost controller and fuel cut defender? Quote Link to comment Share on other sites More sharing options...
SupraD06 Posted March 31, 2013 Share Posted March 31, 2013 Just read through your other thread, there is no mention of a FCD on the list. Quote Link to comment Share on other sites More sharing options...
spikedjack Posted March 31, 2013 Share Posted March 31, 2013 440's can be used at 1.2 bar, however my understanding is at that pressure they are at full duty Quote Link to comment Share on other sites More sharing options...
SupraD06 Posted March 31, 2013 Share Posted March 31, 2013 (edited) Id also check what fuel pump you have, and at Bpu you want colder temp grade spark plugs aswell. If you click on the blue word ( BPU ) it will give you better idea of what you might need to finish the setup. Edited March 31, 2013 by SupraD06 (see edit history) Quote Link to comment Share on other sites More sharing options...
alex341 Posted March 31, 2013 Author Share Posted March 31, 2013 This is the graph from the rolling road. Im more than happy to spend the money on the parts that itll need to get a little more power out of it, im just unsure what parts these should be as this is all still new to me. Im not sure if it has a FCD but Ive checked and it has a walbro fuel pump in it. Quote Link to comment Share on other sites More sharing options...
Benjy Posted March 31, 2013 Share Posted March 31, 2013 Without a FCD, you could put 1000cc injectors in and 2 x Walbro's, but it'll still cut fuel at 1bar boost buddy. But if it's decatted, make sure you put a 1.2 bar restrictor ring in to protect the turbos. Quote Link to comment Share on other sites More sharing options...
thetrashcanman Posted March 31, 2013 Share Posted March 31, 2013 I believe Paul has some 890cc injectors and fuel rail for a decent price, and also agree with other people if you want a decent ECU save up about 2k get a Syvecs and get Ryan to map it. Quote Link to comment Share on other sites More sharing options...
Benjy Posted March 31, 2013 Share Posted March 31, 2013 I believe Paul has some 890cc injectors and fuel rail for a decent price He sold them. Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted March 31, 2013 Share Posted March 31, 2013 I was running 440's and HKS FCD at 1.2 bar on mine and she was fine, afr's wasn't a problem either. No point going with larger injection unless you are going to get a piggy back or standalone ECU. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted April 21, 2013 Share Posted April 21, 2013 (edited) seems down on power for a bpu car, thats near enough stock power, probably getting that little extra bhp from the intercooler and exhaust. if its only hitting 1 bar then youre probably hitting the fuel cut. a nice bpu car will produce 380bhp-400hp, mine is running this. iridium plugs, fcd, fuelpump, full decatted exhaust with 1.2 rr, i was going to do the injectors but dont want to risk putting to much stress on my car, im more wanting to keep it at a nice power lvl. since ive put cat back in for mot, my car is boosting 0.5bar then spikes to upto 1bar very briefly and maintains 0.8bar under hi speed. if you want big big bhp go single.This is the graph from the rolling road. Im more than happy to spend the money on the parts that itll need to get a little more power out of it, im just unsure what parts these should be as this is all still new to me. Im not sure if it has a FCD but Ive checked and it has a walbro fuel pump in it.[ATTACH=CONFIG]166742[/ATTACH][ATTACH=CONFIG]166742[/ATTACH] Edited April 21, 2013 by supraGZaerotop (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest stp88 Posted April 21, 2013 Share Posted April 21, 2013 If you UP the fuel pressure you can get some more out of the OEM injectors , look at the links hope this helps you out . http://injector-rehab.com/ffc/ or http://www.injectorrx.com/fuel-injector-calculator.html , Quote Link to comment Share on other sites More sharing options...
Guest stp88 Posted April 21, 2013 Share Posted April 21, 2013 The Syvecs ECU would be the best start for you , you can make the best of the OEM setup and then upgrade as you need , lf you add up all the other bits that you can get to make the car run better then you are back to the price of a Syvecs , 1. Syvecs 2. Fuel regulator 3. Fuel pump 4. Injectors and rail kit 5. Clutch 6. Turbo 7. Intercooler This is the flow I use to set up my cars. Again hope this helps you ! Quote Link to comment Share on other sites More sharing options...
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