SkydiveMacca Posted September 28, 2013 Share Posted September 28, 2013 I've done a lot of searching, and still not sure. The car already has a Walbro pump and I've just bought a set of 550's and resistor pack. I'll get the injectors cleaned and flow matched, then will fit to my J Spec. Right, here comes the stupid questions... As I understand I can increase the boost with these and should see a good boost in power? What else do I need to do to make use of them?? I'll fit them as per the great guides i've already found, but then what? Will the ECU figure out it can throw more fuel in, or does it need to be told. If so, how? I have a Gizzmo IBCR to fit (the previous owner said this would be needed with the injector upgrade), but, I have no clue what to do with it. Fitting should be no problems as the instructions seem pretty good, but, not sure how to set it to get the best benefit. Do I need to go down the route of re-mapping the ECU (As I would have done in my Scooby days), or am I all set? Any and all advice very, very welcome. Hell, if you're near Peterborough, beer and tea are also available for any help possible! Thanks Macca Quote Link to comment Share on other sites More sharing options...
girth45 Posted September 28, 2013 Share Posted September 28, 2013 Hi , can you give more details about your car and current specification, and why you want to add bigger injectors, is your car a j spec, is it running std turbos? Quote Link to comment Share on other sites More sharing options...
SkydiveMacca Posted September 28, 2013 Author Share Posted September 28, 2013 Hi J spec TT auto car running hybrids. Has a walbro, decat with restrictor, and I think the different spark plugs. Also currently has a MBC with the boost set to .9 As I understand it, with the current set up, bigger injectors and the EBC I should be able to run 1.2 Bar? Quote Link to comment Share on other sites More sharing options...
girth45 Posted September 28, 2013 Share Posted September 28, 2013 Do you know the spec of your turbos ? My car is running std turbos , bpu upgrade and 440 injectors and 1.2 bar of boost through an ebc, Quote Link to comment Share on other sites More sharing options...
Mk4Gaz Posted September 28, 2013 Share Posted September 28, 2013 You won't be able to fit the bigger injectors, without some form of management to control them. This can be either a piggy back (safc, emanage, hks fcon), or a full stand alone. On stock turbos, 1.2 bar is deemed to be safe, with supporting mods for bpu. With hybrids, you really need to know the spec of them (cfm output) to determine your peak boost level - a dyno run whilst setting up your boost controller can monitor this, via a wide band - although you may need to have a threaded port welded into your down pipe. Quote Link to comment Share on other sites More sharing options...
Gpro Posted September 28, 2013 Share Posted September 28, 2013 I got a hks fuel and ignition ecu with plu and play harness if you interested Quote Link to comment Share on other sites More sharing options...
SkydiveMacca Posted September 29, 2013 Author Share Posted September 29, 2013 How much? Seems like there's not a lot of point / gain to increasing the injector sizes? Quote Link to comment Share on other sites More sharing options...
Gpro Posted September 29, 2013 Share Posted September 29, 2013 £150 You max out the 440cc injectors on 1.2 bar boost on twin turbos. If your running hybrids you can turn up the boost if you are running bigger injectors Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted September 29, 2013 Share Posted September 29, 2013 But you have to be careful of the EGTs. Quote Link to comment Share on other sites More sharing options...
SkydiveMacca Posted September 29, 2013 Author Share Posted September 29, 2013 Will dig out the paperwork for the turbos later, but it sounds like I could, with the EBC and my standard 440's, relatively safely increase the boost to 1.1-1.2? If I change the injectors over to the 550's, will the current ECU not 'learn' it can throw more fuel in? Excuse my ignorance, but can the standard ECU not be re-mapped (coming from a scooby background) to accommodate the extra fuelling? With the 550's, what would be an accepted safe level of boost? - - - Updated - - - GPro, what model numbers are those? Quote Link to comment Share on other sites More sharing options...
Tsia Posted September 29, 2013 Share Posted September 29, 2013 Nope, Toyota are awkward and you can't remap the standard ECU. 1.2 bar is safe IIRC on 440ccs, although you're really pushing them at this point. Quote Link to comment Share on other sites More sharing options...
Gpro Posted September 30, 2013 Share Posted September 30, 2013 Will dig out the paperwork for the turbos later, but it sounds like I could, with the EBC and my standard 440's, relatively safely increase the boost to 1.1-1.2? If I change the injectors over to the 550's, will the current ECU not 'learn' it can throw more fuel in? Excuse my ignorance, but can the standard ECU not be re-mapped (coming from a scooby background) to accommodate the extra fuelling? With the 550's, what would be an accepted safe level of boost? - - - Updated - - - GPro, what model numbers are those? http://www.mkivsupra.net/vbb/showthread.php?294508-HKS-Fcon-ECU-and-SARD-Analyse-ECU Quote Link to comment Share on other sites More sharing options...
marc_p Posted September 30, 2013 Share Posted September 30, 2013 Will dig out the paperwork for the turbos later, but it sounds like I could, with the EBC and my standard 440's, relatively safely increase the boost to 1.1-1.2? If I change the injectors over to the 550's, will the current ECU not 'learn' it can throw more fuel in? Excuse my ignorance, but can the standard ECU not be re-mapped (coming from a scooby background) to accommodate the extra fuelling? With the 550's, what would be an accepted safe level of boost? - - - Updated - - - GPro, what model numbers are those? Yes, you can run 1.2bar on 440cc injectors, you can't remap a standard ECU, you can either get a piggy back(I personally find this a bit of a crude way, but others have had success) or go with a standalone ECU. If you just drop the 550s in there it'll just run excessively rich constantly, it won't self learn. Quote Link to comment Share on other sites More sharing options...
Mk4Gaz Posted September 30, 2013 Share Posted September 30, 2013 But, if the hybrid turbos flow a much higher cfm than the stock turbos, I would run at a lower boost level, until you have someone verify that you have enough fuel to cope with the extra air being forced in. Quote Link to comment Share on other sites More sharing options...
Gpro Posted September 30, 2013 Share Posted September 30, 2013 Your never going to get the benefits of hybrid turbos without fuel and ignition control also you need bigger then 440cc to have any benefits. Quote Link to comment Share on other sites More sharing options...
Nic Posted September 30, 2013 Share Posted September 30, 2013 But, if the hybrid turbos flow a much higher cfm than the stock turbos, I would run at a lower boost level, until you have someone verify that you have enough fuel to cope with the extra air being forced in. It will run wildly rich. If you fit bigger injectors you must also have a piggyback or standalone ECU mapped to control them. Quote Link to comment Share on other sites More sharing options...
Mk4Gaz Posted September 30, 2013 Share Posted September 30, 2013 It will run wildly rich. If you fit bigger injectors you must also have a piggyback or standalone ECU mapped to control them. It will with the 550's, I meant, even on the 440's I'd still want to make sure there was enough fuel to cope with the extra flow of hybrids at that boost level. Im pretty sure the ecu just goes to 100% duty after a certain boost level (1 bar?) much like the mr2s, but I still wouldn't risk cranking the boost up without having it confirmed. If you lean out and the engine dets its tits off, you'll have more than what size injectors to worry about Quote Link to comment Share on other sites More sharing options...
Nic Posted September 30, 2013 Share Posted September 30, 2013 (edited) It will with the 550's, I meant, even on the 440's I'd still want to make sure there was enough fuel to cope with the extra flow of hybrids at that boost level. Im pretty sure the ecu just goes to 100% duty after a certain boost level (1 bar?) much like the mr2s, but I still wouldn't risk cranking the boost up without having it confirmed. If you lean out and the engine dets its tits off, you'll have more than what size injectors to worry about You'll either need to fit an A/FR gauge or put the car on a dyno to see how much boost you can safely run. Edited September 30, 2013 by Nic (see edit history) Quote Link to comment Share on other sites More sharing options...
Mk4Gaz Posted September 30, 2013 Share Posted September 30, 2013 Exactly Quote Link to comment Share on other sites More sharing options...
SkydiveMacca Posted September 30, 2013 Author Share Posted September 30, 2013 Having looked through the paperwork, CR Turbos seem to have done the work, but all that's listed is 2 x 'remanufactured uprated turbos' at £540 each. That was back in 2010. Might give them a call tomorrow and see if they can give me a bit more information. So, ignoring my hybrids, why do normal people with TT J specs bother upgrading to UK spec 550's if they can max out the 440's and run 1.2 bar? What kind of replacement ECU options do people recommend? Can anyone rate a Dyno local to Peterborough that could handle an auto TT - seemingly will need to get either the piggy back or a standalone mapped. And there was me thinking that I could just whack on the 550's and turn the boost up a bit. This is becoming a very expensive mod! Quote Link to comment Share on other sites More sharing options...
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