Fuel Injector Info
02-28-2009, 11:36 PM
#51
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Anyone got a picture of the injector wiring?
The diagram with the rear secondary and front P2 the same color wire has got me pissed off.
I have also been told the secondaries come from the wiring harness by themselves.
I guess I am just old school and can't see the difference between black with blue wire and black with blue wire......
A picture really is worth a thousands words here.
The ECU wiring does not match a 2007, I was going to cleverly use my LAN pinger to prove which wire goes where......
At least I did take a picture of the primaries.....
Of course I didn't touch those.....
The diagram with the rear secondary and front P2 the same color wire has got me pissed off.
I have also been told the secondaries come from the wiring harness by themselves.
I guess I am just old school and can't see the difference between black with blue wire and black with blue wire......
A picture really is worth a thousands words here.
The ECU wiring does not match a 2007, I was going to cleverly use my LAN pinger to prove which wire goes where......
At least I did take a picture of the primaries.....
Of course I didn't touch those.....
if you look at this pic close, notice that the Front P1 and Rear P1 are wired side by side. As well secondaries and P2's.. if you trace the black/blue wire back to the connector, you should be able to determine which is which
03-01-2009, 07:31 AM
#52
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03-01-2009, 11:40 AM
#53
Registered
Injector wire tips for 2007
Number one tip, take digital pictures and mark the leads before removal.
I hope this is correct, please feel free to correct any errors....
Fuel Rail 1 (two injectors)
Both leads for this fuel rail come off of the main harness together.
Front rotor injector wire color is light-green and red. (Front Primary 1)
Front injector Wire lead has White colored tape
Rear rotor injector wire color is light-green and black. (Rear Primary 1)
Rear injector Wire lead has Tan colored tape.
Fuel Rail 2 (four injectors)
The two center (the middle) injector wires come off the harness together and split.
Front side of the middle split has Yellow colored tape.
Rear side of the middle split has Green colored tape.
The two end (front and rear) injector wires come off the harness separately and have no colored tape.
The front injector wire is Green and Red. (Front Secondary)
The front rotor middle injector wire is Black and Blue. (Front Primary 2)
The rear rotor middle injector wire is White and Green. (Rear Primary 2)
The rear injector wire is Black and Blue. (Rear Secondary)
I hope this is correct, please feel free to correct any errors....
Fuel Rail 1 (two injectors)
Both leads for this fuel rail come off of the main harness together.
Front rotor injector wire color is light-green and red. (Front Primary 1)
Front injector Wire lead has White colored tape
Rear rotor injector wire color is light-green and black. (Rear Primary 1)
Rear injector Wire lead has Tan colored tape.
Fuel Rail 2 (four injectors)
The two center (the middle) injector wires come off the harness together and split.
Front side of the middle split has Yellow colored tape.
Rear side of the middle split has Green colored tape.
The two end (front and rear) injector wires come off the harness separately and have no colored tape.
The front injector wire is Green and Red. (Front Secondary)
The front rotor middle injector wire is Black and Blue. (Front Primary 2)
The rear rotor middle injector wire is White and Green. (Rear Primary 2)
The rear injector wire is Black and Blue. (Rear Secondary)
03-01-2009, 11:58 AM
#54
OK.
I'm having difficulty in understanding what you are trying to clarify.
You just spelled out, in somewhat lengthy prose, exactly what is shown in the diagram I posted at the beginning of the thread.
Just follow the diagram. Its all shown for you there in intimate detail.
I'm having difficulty in understanding what you are trying to clarify.
You just spelled out, in somewhat lengthy prose, exactly what is shown in the diagram I posted at the beginning of the thread.
Just follow the diagram. Its all shown for you there in intimate detail.
03-01-2009, 12:21 PM
#55
Registered
OK.
I'm having difficulty in understanding what you are trying to clarify.
You just spelled out, in somewhat lengthy prose, exactly what is shown in the diagram I posted at the beginning of the thread.
Just follow the diagram. Its all shown for you there in intimate detail.
I'm having difficulty in understanding what you are trying to clarify.
You just spelled out, in somewhat lengthy prose, exactly what is shown in the diagram I posted at the beginning of the thread.
Just follow the diagram. Its all shown for you there in intimate detail.
I also wanted to add way the wiring pairs split from the harness.
Seriously, what really confused me was that a 4 port also has secondaries, but the 6 port calls those positions P-2, so in some places, the manual seems to call the 6 port P-2 spot "Secondaries".
(Which would make my 4 injector rail colors wrong if the secondaries were supposed to be in the middle)
I am very glad to know the color order is correct, and thank you for posting the original.
03-21-2009, 01:49 PM
#58
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Thanks for the clarification, reason I asked is when I changed my plugs and spark plug wires this Pepboy Seller said I can upgrade my injectors for better performance for $25 and keep my OEM ECU, I knew at first he didn't knew what he's talking about cause he tried to sell me Synthetic oil and that's a NO BUY.. jeje
03-21-2009, 03:37 PM
#60
Rotary lover
Hi
On the injector issue
i am porting a bit etc on my 8 with rebuild,
you guys say injectors is big enough,
but my question is if anyone knows if there is a maximum (not thinking of 100% duty cycle) but a maximum in the program on ecu to say no more fuel, like a limit or will it still first look at the sensors to first
I am just worried i start to run lean if it so happens the ecu has a upper limit
anyone know?
thanks
On the injector issue
i am porting a bit etc on my 8 with rebuild,
you guys say injectors is big enough,
but my question is if anyone knows if there is a maximum (not thinking of 100% duty cycle) but a maximum in the program on ecu to say no more fuel, like a limit or will it still first look at the sensors to first
I am just worried i start to run lean if it so happens the ecu has a upper limit
anyone know?
thanks
03-21-2009, 05:21 PM
#61
Super Moderator
Jeff.... AKA MazdaManiac could help here...
04-24-2009, 06:36 PM
#64
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Is there a chart anywhere for what size injectors to upgrade to while running a turbo?? I am going be getting my turbo upgraded by BNR and they said it should be able to handle 360whp. I only wanna run about 325-330whp. Is there a chart or anything that explains which injectors I should change out and to what size? Im still learning the fuel system on this car. Thanks!! By the way, this thread is the product of a search!
04-24-2009, 09:54 PM
#65
Is there a chart anywhere for what size injectors to upgrade to while running a turbo?? I am going be getting my turbo upgraded by BNR and they said it should be able to handle 360whp. I only wanna run about 325-330whp. Is there a chart or anything that explains which injectors I should change out and to what size? Im still learning the fuel system on this car. Thanks!! By the way, this thread is the product of a search!
I have 650cc High Impedance injectors I was about to release...
Two options Plug and Play and ones that you solder...
Shoot me a PM I will have these ready for everyone to buy Monday
You both should be in the "special" Olympics for sniping
05-25-2009, 01:11 AM
#69
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Hey MazdaManiac!
Since this is a thread with injector information, could you also post what size fuel injectors that Mazsport used to sell with their Fuel injector kit upgrade? The reason I am asking is because I currently run the Interceptor-X and I want to switch to the Cobb Access port with a tune done by you. I know that I need to know my injector sizes in order to get a base map, so I need this information or a way to find out this information.
on my invoice, the part number was Injector-Kit-RX8 and they were selling them for around $560.
Since this is a thread with injector information, could you also post what size fuel injectors that Mazsport used to sell with their Fuel injector kit upgrade? The reason I am asking is because I currently run the Interceptor-X and I want to switch to the Cobb Access port with a tune done by you. I know that I need to know my injector sizes in order to get a base map, so I need this information or a way to find out this information.
on my invoice, the part number was Injector-Kit-RX8 and they were selling them for around $560.
07-12-2009, 07:26 PM
#71
07-14-2009, 05:38 PM
#75
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Hey MazdaManiac!
Since this is a thread with injector information, could you also post what size fuel injectors that Mazsport used to sell with their Fuel injector kit upgrade? The reason I am asking is because I currently run the Interceptor-X and I want to switch to the Cobb Access port with a tune done by you. I know that I need to know my injector sizes in order to get a base map, so I need this information or a way to find out this information.
on my invoice, the part number was Injector-Kit-RX8 and they were selling them for around $560.
Since this is a thread with injector information, could you also post what size fuel injectors that Mazsport used to sell with their Fuel injector kit upgrade? The reason I am asking is because I currently run the Interceptor-X and I want to switch to the Cobb Access port with a tune done by you. I know that I need to know my injector sizes in order to get a base map, so I need this information or a way to find out this information.
on my invoice, the part number was Injector-Kit-RX8 and they were selling them for around $560.
If you followed Scott's suggestion on where to put the injectors, you may want to consider switching the larger injectors to bank two. (As you will be pulling the 780s.) You can get 650s from Fluid Motorsports. Make sure they are machined correctly. (The ones you got from scott had machined collars. )