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The mkiv Supra Owners Club

Ecu and Injectors question


jza800

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Hi

 

I am gonna build my 2jzgte from twin turbo to single turbo, and i what to change my Injectors as i only have 440cc now.. i have found a set 540cc also high impedance can i change to 540cc and stille keep the j-spec ecu, can the j-spec ecu controle the 540cc injectors with no problem???

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No you'd need a piggy back fuel control ecu such as a Apexi safc unit or emanage blue perhaps or full control like a Syvecs unit if you want to do it properly.

 

 

This. Look at the ECU Master DET3 if you go piggyback, these provide a whole lot more than the SAFC units and cost about the same new as a second hand Apexi safc or Neo will if you shop around. At least with the DET3 you can alter the timing, control boost, control fuel cut as well as letting you control other bits too. Also offers logging although I have struggled a bit with this as it requires your PC to be connected during logging it seems and is a bit clumsy, but for the money....

 

http://www.ecumaster.co.uk/products/digital-ecu-tuner-3

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That unit seems to only control 4 injectors? How's that work on an inline 6? :)

 

 

It is used as a signal fudging piggy back for the map signal in exactly the same way as the Apexi safcs do, its just a lot more sophisticated and modern. It can however be used in "fuel implant mode" but it would have to be used to batch fire, I never fancied that and mine is just to tweak the fuelling and ignition. But for the price you couldn't really expect it to have a whole array of injector drivers too. I played with a MAPECU and also the SAFC first but these are streets ahead of both of those. But I do realise they don't offer the same in terms of injector drivers compared to the Emanage stuff.

 

Should add also that it has its own map sensor built in so it can read and provide meaningful outputs up to a much higher level of boost.

Edited by Shane (see edit history)
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540cc won't do you for a single turbo. Are you building this on a severe budget? If so, I would advise against it.

 

What Scott said. What BHP are you planning on running if you go single?

540CC injectors would probably see you are 450bhp or a little more but you dont want the injectors to max out.

If you tell people your power goal we should be able to advise you on what size injectors to get.

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My power goals is maxium 400 hp. maybe 450 hp.. just what to change it, as i make the supra sound as it should from the start.. the stock twin turbo makes it very silent with respect to a single turbo will do..

 

Is it a fool moon out? That makes absolutely no sense at all. Regarding you wishes I would recommend selling up and buying an N/A. You can then install the injectors you suggested previously along with an N/A-T kit.

 

Taking off a set of 400-450hp tubbies and replacing them with a single is mental IMO.

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Is it a fool moon out? That makes absolutely no sense at all. Regarding you wishes I would recommend selling up and buying an N/A. You can then install the injectors you suggested previously along with an N/A-T kit.

 

Taking off a set of 400-450hp tubbies and replacing them with a single is mental IMO.

 

I did not ask about your personal opinion about my choice, and that was not my question either.. so if you dont have any good to say, please stay out of my thread...

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I did not ask about your personal opinion about my choice, and that was not my question either.. so if you dont have any good to say, please stay out of my thread...

 

Or what exactly? You do realise I'm trying to help you? People say really, really, REALLY, stupid things on this forum all the time, often they need a reality check.

 

I'm fully entitled to my opinion regardless of whether you like it or not. First off, your injector choice for a single is bonkers. Secondly, I don't think you could buy a turbo to make so little power economically on the Supra and lastly it'll cost you a stupid amount of money when you could simply remove the BOV and the stock intake.

 

Have you considered putting the intercooler in front of the bumper yet?

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Or what exactly? You do realise I'm trying to help you? People say really, really, REALLY, stupid things on this forum all the time, often they need a reality check.

 

I'm fully entitled to my opinion regardless of whether you like it or not. First off, your injector choice for a single is bonkers. Secondly, I don't think you could buy a turbo to make so little power economically on the Supra and lastly it'll cost you a stupid amount of money when you could simply remove the BOV and the stock intake.

 

Have you considered putting the intercooler in front of the bumper yet?

 

But, but, he wants to make lots of noise. And probably for about 100 quid.

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Or what exactly? You do realise I'm trying to help you? People say really, really, REALLY, stupid things on this forum all the time, often they need a reality check.

 

I'm fully entitled to my opinion regardless of whether you like it or not. First off, your injector choice for a single is bonkers. Secondly, I don't think you could buy a turbo to make so little power economically on the Supra and lastly it'll cost you a stupid amount of money when you could simply remove the BOV and the stock intake.

 

Have you considered putting the intercooler in front of the bumper yet?

 

i have all the turbo kit/parts to the engine, as it have run with that turbo when i got the car... and it made 450 hp on 1.01 bar, on stock ecu and injectors.. but because of the law we have where i come from, it was not street legal with single turbo, now i have the possibility to put in on the car again..

 

i already have a big front mount intercooler on the car yes...

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