Gtr injectors fit KA-E?
Gtr injectors fit KA-E?
I'm gonna buy these skyline injectors from themadscientist. I wanna know if they will fit right into the KA-E that i have now? themadscientist said that he was pretty sure they would fit but i wanna be totally sure before i spend money on them and find out they don't fit.
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I am Technoman
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I am Technoman
- Posts: 979
- Joined: Fri Nov 22, 2002 6:49 am
- Car: ???
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I am Technoman
- Posts: 979
- Joined: Fri Nov 22, 2002 6:49 am
- Car: ???
I assume that your going to add boost to you’re engine.In order to get the “pulse” right you will need some kind of computer like one retuned from JWT for those injectors. Or you could use a “piggy back” which will attach to you’re existing ecu and you can make changes to the signal after the stock ecu. Those injectors will “fit” on you’re motor but there is way more to it than just making them fit.
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I am Technoman
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- Joined: Fri Nov 22, 2002 6:49 am
- Car: ???
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I am Technoman
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- Joined: Fri Nov 22, 2002 6:49 am
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plus i think mad is giving the wiring diagram too..-
themadscientist
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I will draw you a wiring diagram, it's very basic stuff, hell I can do it 
To explain what the piggyback is going to do for you, the fuel curve in your computer assumes whatever flow your current injectors have, 260cc I think? You throw in 444cc ones with 58% more flow and you will saturate your engine with fuel because the computer doesn't know you changed them. When you get the turbo and put them in get something Like an Apex SAFC. It works by intercepting the air flow signal and allowing you to change it before it reaches the computer. You are lying to the computer to change the fuel flow. So you throw the R injectors in and it is crazy rich at idle, kind of coughs until boost comes up and then gets a little lean at the top so you would use the piggy back to change this. You go with something like -20% at 1000, -15 at 2000, -5 at 3000 as the boost hits +5 at 5000 and +10 at 7000. That's just an example but a good piggywill allow you to tune out the larger injectors so the car runs right. I would reccomend you do the following before using them;
Send them off to be cleaned and flow tested
install an adjustable fuel pressure regulator
get a good quality Air/Fuel meter
get an Apex SAFC
these are the tools that will allow you to get the car purring like a kitten
To explain what the piggyback is going to do for you, the fuel curve in your computer assumes whatever flow your current injectors have, 260cc I think? You throw in 444cc ones with 58% more flow and you will saturate your engine with fuel because the computer doesn't know you changed them. When you get the turbo and put them in get something Like an Apex SAFC. It works by intercepting the air flow signal and allowing you to change it before it reaches the computer. You are lying to the computer to change the fuel flow. So you throw the R injectors in and it is crazy rich at idle, kind of coughs until boost comes up and then gets a little lean at the top so you would use the piggy back to change this. You go with something like -20% at 1000, -15 at 2000, -5 at 3000 as the boost hits +5 at 5000 and +10 at 7000. That's just an example but a good piggywill allow you to tune out the larger injectors so the car runs right. I would reccomend you do the following before using them;Send them off to be cleaned and flow tested
install an adjustable fuel pressure regulator
get a good quality Air/Fuel meter
get an Apex SAFC
these are the tools that will allow you to get the car purring like a kitten
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themadscientist
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the injectors will work in the sense that they spray fuel as they should. The problem is your computer will run them like they are 260cc so you will be rich as hel. In a simplified example imagine the water you use to brush your teeth in the morning(I hope you brush regularly dental hygene is important:D ). Your sink foucet is about 1" in diameter and the valve is turned to 50%. That is just the right amount of water to get the job done. Now I sneak into your bathroom during the night and run a firehose to your sink. If you set that to the same flow of 50% can you stay in front of the sink at all? That is the problem, you need the SAFC and or fuel pressure regulator to turn down the time these injectors are open because they flow more, you could brush your teeth with a firehose if you could turn the valve down to 5% instead of the 50% the fucet needed to do the same job.
