Injector Compatability
02-24-2003, 03:43 AM
#1
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Join Date: Aug 2002
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Could someone tell from experience, what size injectors fit into the secondary rail without modification.ie, what are the largest sized injectors i can install into the standered fuel rail? With having larger injector´s, does a resistor need to be installed too?
What is the max size injector the S-AFC can control?
Many thanks
John
What is the max size injector the S-AFC can control?
Many thanks
John
02-24-2003, 12:36 PM
#2
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small o - ring Japanese fuel injectors like nippondenso makes will fit into fuel rail, top feed injectors. Some injectors as they get bigger, they change and will not fit in to rail.
I think the largest yet you could go high is 720cc top feed unless you get them ported to flow more like rceng.com does.
If you have the stock ecu, you have to worry about impedence, they have high or low impedence so it doesn't matter how big or small they are. So depending on your system depends if you need a resistor.
I think anything bigger than 720 or 1000 cc would be hard for the safc to control if you have to turn it down a lot for low end driveablity.
C
I think the largest yet you could go high is 720cc top feed unless you get them ported to flow more like rceng.com does.
If you have the stock ecu, you have to worry about impedence, they have high or low impedence so it doesn't matter how big or small they are. So depending on your system depends if you need a resistor.
I think anything bigger than 720 or 1000 cc would be hard for the safc to control if you have to turn it down a lot for low end driveablity.
C
02-24-2003, 12:55 PM
#3
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So using the stock ecu, or at best an FCON, would i need low or high impendance injectors? Which type would not need a resistor? So you reckon i should be able to fit a pair of 1000cc into the secondary fuel rail? Who would supply them?
John
John
02-24-2003, 01:37 PM
#5
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Originally Posted by ukrx7' date='Feb 24 2003, 10:55 AM
So using the stock ecu, or at best an FCON, would i need low or high impendance injectors? Which type would not need a resistor? So you reckon i should be able to fit a pair of 1000cc into the secondary fuel rail? Who would supply them?
John
John
mike
02-24-2003, 05:05 PM
#8
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Originally Posted by Racer X' date='Feb 24 2003, 02:40 PM
What is the biggest injector can a stock S4 T2 Ecu handle?With a piggy fuel controller?I heard you can run up to 1000cc with a APEX-i fuel controller.Is there any truth to this.
mike
02-24-2003, 10:09 PM
#9
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Originally Posted by j9fd3s' date='Feb 24 2003, 03:05 PM
the stock ecu is setup to run 550 x4 injectors it wont really handle anything else.
mike
mike
02-24-2003, 10:19 PM
#10
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Originally Posted by Racer X' date='Feb 24 2003, 08:09 PM
[quote name='j9fd3s' date='Feb 24 2003, 03:05 PM'] the stock ecu is setup to run 550 x4 injectors it wont really handle anything else.
mike
mike
yup thats the popular setup
mike