Matti85 Posted August 28, 2006 Share Posted August 28, 2006 My car got (what the previous owner says is Hybrids) Stock turbos went boom, and they took out the tubbies, had them reconditoned and upgraded to steel and ball bearing (dont know if they can be called hybrids just beacuse of that, how do you check ?) Anyway i want to program my BC to run 1.0 bars standard and 1.4 bars on the second mode (when i race and so on) Mods on car is these Aftermarket BOV Buddyclub exhaust 2nd Decat Boost gauge Greedy BC Greedy BCC Im thinking if its worth replacing the first cat, and put a downpipe there with 1.0 rec ring, or just let the cat be for MOT purpose and force the boost when running 1.4, what benefits will i gain without the cat in at the same bar level ? And finally is it safe to run 1.4 bars on a basiclly stock Supra, have hear that there is some engine parts that can be overhetad, any true to this. Maybe i need to uprade the fuel pump to a Walbro in order to do this. Link to comment Share on other sites More sharing options...
SimonB Posted August 28, 2006 Share Posted August 28, 2006 You'll need more than just a fuel pump! You'll need bigger injectors (or at the very least an adjustable fuel pressure reg set to more than the stock pressure) plus a way of controlling your fueling - SAFC, Emanage, something like that. Then you'll need it setting up, or to do it yourself you'll want a wideband. The standard fueling is not up to 1.4 BAR. And you definitely don't want the 1st cat in, it's very restrictive. Link to comment Share on other sites More sharing options...
Matti85 Posted August 28, 2006 Author Share Posted August 28, 2006 Thought SAFC was controlling the airflow, maybe i need to read up more. Have seen alot of guys running 1.4 without replacing the injectors, are you sure of this ? 1.4 will be seeing around 450bhp i think. How hard is it to replace the injectors if it comes to that in the future. Link to comment Share on other sites More sharing options...
wkdtime Posted August 28, 2006 Share Posted August 28, 2006 Thought SAFC was controlling the airflow, maybe i need to read up more. Have seen alot of guys running 1.4 without replacing the injectors, are you sure of this ? Its not reccomended for JDM Supras, but UK cars will be ok. Throw in some 550cc injectors, Uprated fuel pump and something to control the fuelling, SAFC2 or Emanage blue will do the job. Link to comment Share on other sites More sharing options...
Matti85 Posted August 28, 2006 Author Share Posted August 28, 2006 Ok, so Uk cars comes with bigger injectors aldredy, wow that i did not knew. But is it possible to replace the injectors by your self, or is it complcated job. Link to comment Share on other sites More sharing options...
terawua Posted August 28, 2006 Share Posted August 28, 2006 You can change the injectors, but you would need new o-rings, and make sure they were clean and flow tested. You would also need a resistor pack as the 550's are low impedance, and the 440's are high impedance. Alternativlely you could future proof to an extent by getting power enterprise 650's which drop straight into the stock rail and would just need something to modify the fuelling as stated above for about 600 quid cleaned and flow tested. Or you could get a full monty fuel system from PHR for about a grand at the moment - rail, injectors 850 or 1000, fuel line, FPR, twin in-tank pumps, though I am not sure how injectors this large would cope with running such small turbos, kind of like trying to feed a baby with a JCB.... Link to comment Share on other sites More sharing options...
Matti85 Posted August 28, 2006 Author Share Posted August 28, 2006 Saw these, they say it wont require any modding or resistor packs, fitts right in. Power Enterprise 550cc, 650cc or 800cc injector,these injectors fit straight on to the Jap spec Supra's without the need for a resistor pack and re-wiring £90 Link to comment Share on other sites More sharing options...
Rich Posted August 28, 2006 Share Posted August 28, 2006 you can run 1.4 bar on hybrids but as said above 650cc power enterprise injectors,FPR ,something to control the fuelling,a wideband gauge and most importantly an EGT gauge as you will be pushing the turbo pipework and housings to the limit pushing that much boost(especially on a hot day).Also a good boost gauge in case it starts to spike when it is cold . Link to comment Share on other sites More sharing options...
Matti85 Posted August 29, 2006 Author Share Posted August 29, 2006 What is a wideband gauge and EGT gauge (im guessing exhaust gas temp) why is it so important. Link to comment Share on other sites More sharing options...
Darren Posted August 29, 2006 Share Posted August 29, 2006 And its been mentioned on here numerous times whether theres actually any power gains above 1.2/3 bar. So that worth thinking about Link to comment Share on other sites More sharing options...
JohnA Posted August 29, 2006 Share Posted August 29, 2006 ...Anyway i want to program my BC to run 1.0 bars standard and 1.4 bars on the second mode (when i race and so on)... The real question is "safe for what"? The turbos themselves? The engine internals? The ransmission? ...etc... These do not all hit their limits at the same time. Depending on your setup, a different part could be the 'weak' link under those conditions. Link to comment Share on other sites More sharing options...
Alex Posted August 29, 2006 Share Posted August 29, 2006 1.4bar will be fine after you've fitted 6x PE650cc Injectors (straight swap easy to do) 1x Walbro GS341 Fuel Pump. 1x GReddy eManage Blue or an Apexi S-AFC. 1x AFR Gauge and probe. Link to comment Share on other sites More sharing options...
Kranz Posted August 29, 2006 Share Posted August 29, 2006 If you're worried about temperatres in the engine or exhaust then water injection would be worth considering to bring the temps down at high boost. Link to comment Share on other sites More sharing options...
Alex Posted August 29, 2006 Share Posted August 29, 2006 Water Injection is a good idea... Another optional extra is an EGT gauge. Link to comment Share on other sites More sharing options...
Wez Posted August 29, 2006 Share Posted August 29, 2006 And its been mentioned on here numerous times whether theres actually any power gains above 1.2/3 bar. So that worth thinking about This applies to stock tubbies Link to comment Share on other sites More sharing options...
JohnA Posted August 29, 2006 Share Posted August 29, 2006 Water Injection does feck-all for EGTs, although if implemented properly it can provide awesome margins for operating in the Dark Regions over 1.2/3 bar. This also applies to stock tubbies Link to comment Share on other sites More sharing options...
Alex Posted August 29, 2006 Share Posted August 29, 2006 Anything that cools the intake charge is doing something for preventing the onset of DET which is usually down to EGTs. Link to comment Share on other sites More sharing options...
Matti85 Posted August 29, 2006 Author Share Posted August 29, 2006 Im confused on whifbitz injector pricing, is it relly 90£ each ?, that means it will be almost 600£ for 6x which seems to be what i need. 600 for Injectors 300 for the Saf 200 for the water injection kit 100 for the Walbro 50 for the gauges Waw that is not cheep anymore =(, what was i thinking. Link to comment Share on other sites More sharing options...
Thorin Posted August 29, 2006 Share Posted August 29, 2006 Im confused on whifbitz injector pricing, is it relly 90£ each ?, that means it will be almost 600£ for 6x which seems to be what i need. 600 for Injectors 300 for the Saf 200 for the water injection kit 100 for the Walbro 50 for the gauges Waw that is not cheep anymore =(, what was i thinking. Are SAFC's still that much? I'd go for the emanage instead if they are. Water injection is not essential... neither are the gauges really. Rest sounds about right prices. Link to comment Share on other sites More sharing options...
Guru Posted August 29, 2006 Share Posted August 29, 2006 Im confused on whifbitz injector pricing, is it relly 90£ each ?, that means it will be almost 600£ for 6x which seems to be what i need. 600 for Injectors 300 for the Saf 200 for the water injection kit 100 for the Walbro 50 for the gauges Waw that is not cheep anymore =(, what was i thinking. Yes they are that much new. Why don't you check the For Sale section for second hand 550cc injectors from a UK spec? They will set you back about £200 at the most. You will need a resistor pack but they can be cheap too if you look Link to comment Share on other sites More sharing options...
Wez Posted August 29, 2006 Share Posted August 29, 2006 I have a brand new Resistor Pack from Toyota and a spare rail with 550cc UK/US injectors already in it. Make me a resonable offer and there yours if you want them. I also have a FSE PBV with gauge and braided lines if you want to up the fuel pressure too Link to comment Share on other sites More sharing options...
Matti85 Posted August 30, 2006 Author Share Posted August 30, 2006 Searched and found that Water Injection cost more then 300£, wont it be beter to aim for a Miami GT InterCooler, that goes for 399£. They have both the same purpose right, so which one is beter to put money into, i should be easier to install the IC then Water injection system. Link to comment Share on other sites More sharing options...
Soop Dogg Posted August 30, 2006 Share Posted August 30, 2006 A bigger than stock intercooler would be a good idea too if you haven't already thought about it. And 550's will run hybrids to 1.4bar with some headroom too. Oh, and you're only budgeting £50 for gauges. A wideband AFR gauge and sensor will run you about 5 times that, but you'll need it for your fuel controller. (As others have suggested, the E-Manage blue is good) Did you really expect to get reasonable (and safe) power gains for a few quid? Sorry, but you don't get something for nothing without causing problems. Link to comment Share on other sites More sharing options...
Thorin Posted August 30, 2006 Share Posted August 30, 2006 Pushing hybrids to the limit is false economy IMO anyway. I'd gradually do the mods with a view to upgrading to a single in the future. Link to comment Share on other sites More sharing options...
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