Fuel Injector Info
#101
Mazsport Fuel injector Info
Uh, I am not jeef, but I have the injectors that Scott sold. He sold 650cc/min Sieman Dekas (High impedance) and 780cc/min Densos (IIRC) that were low impedance. While it has not yet been proved by a failure and I ran the 780s for several weeks, you should not run low impedance injectors on the stock pcm as it likely does not have drivers to run low impedance injectors (the int-x does.) Again, while I dont know of any failures, running low impedance injectors on Honduhs has fried boards in the past.
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. )
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. )
Thank you so much, carbonRX8! This information was a great help to me. I would like to know which injectors that I have, Is there any easy way for me to check the impedance on all the fuel injectors to make sure that they are High Impedance? For example, use an ohm meter on the relay contacts in the fuse box for example? or probe a certain wire on the PCM Connector? What ohm level am I looking for?
#102
My fuel Injector Impedances
Ok, I might have answered my own question...
If someone could look at the chart below and tell me what fuel injectors I may be running, that would be helpful. I have measured my resistances on my fuel injectors.
I think that I have High impedance Fuel injectors in:
Front Primary 1
Rear Primary 1
Front Primary 2
Rear Primary 2
and I think I have low impedance Injectors in:
Front Secondary
Rear Secondary
Could someone comment on this setup and let me know what fuel injectors I may have, as well as if this setup will work with the Cobb Access port?
Thanks!
PS. Note in the picture below that there is a shot of my relay box. In the Electrical wiring diagram for this car, one wire of the fuel injector was connected to the PCM Wiring harness and the other wire was indicated to be connected to "B+"
If someone could look at the chart below and tell me what fuel injectors I may be running, that would be helpful. I have measured my resistances on my fuel injectors.
I think that I have High impedance Fuel injectors in:
Front Primary 1
Rear Primary 1
Front Primary 2
Rear Primary 2
and I think I have low impedance Injectors in:
Front Secondary
Rear Secondary
Could someone comment on this setup and let me know what fuel injectors I may have, as well as if this setup will work with the Cobb Access port?
Thanks!
PS. Note in the picture below that there is a shot of my relay box. In the Electrical wiring diagram for this car, one wire of the fuel injector was connected to the PCM Wiring harness and the other wire was indicated to be connected to "B+"
#103
can someone confirm that my wiring is on the right injectors on my 04 mt
FP-White Tape(no wiring colors)
RP-Yellow Tape(no wiring colors)
these come off the same harness i could get wire colors if needed just more work
FS-Blue/Red,White/Blue
RS-Blue/Black,White/Blue
FP2-White/Blue,Blue/Black
RP2-White/Blue,White/Green
thanks for any help. i really dont want to take this back back apart
FP-White Tape(no wiring colors)
RP-Yellow Tape(no wiring colors)
these come off the same harness i could get wire colors if needed just more work
FS-Blue/Red,White/Blue
RS-Blue/Black,White/Blue
FP2-White/Blue,Blue/Black
RP2-White/Blue,White/Green
thanks for any help. i really dont want to take this back back apart
#104
nice! i took mine all out to remove the lower mani. any info on plug oder?
#105
more accurate data for the yellow P2/Secondary injectors:
Flow Rates:
450cc/min at 3 bar
486cc/min at 3.5 bar
524cc/min at 4 bar
Resistance: 11.8-16.5 Ohms
Voltage: 8-15 Volts, Nominal 13.5 Volts
Amperage: 1.0 Amps
Pressure: Min. 36 PSI (2.5 bar), Max. 101 PSI (7 bar)
Flow Rates:
450cc/min at 3 bar
486cc/min at 3.5 bar
524cc/min at 4 bar
Resistance: 11.8-16.5 Ohms
Voltage: 8-15 Volts, Nominal 13.5 Volts
Amperage: 1.0 Amps
Pressure: Min. 36 PSI (2.5 bar), Max. 101 PSI (7 bar)
#107
You have been talking a lot lately about stuff that kinda implies you are doing a turbo setup . Where is your build thread ?
#109
That is significantly different than the data I've collected from three independent testing sources, all of which are well known vendors, including the OE, Denso.
#111
they are a bit high compared to my own, but the OE /Denso data is just as far off in the opposite direction IMO as previously eluded to in a prior post
#112
Different systems utilize different dead times, max duty cycle, nominal voltage and even a different testing solvent.
All that matters to me is what lines up with the scalar values in the software and the OE numbers do that best.
#113
Primary (located in houseing) N3R113250
Secondary (located in LIM) N3R213250
Last edited by Highway8; 05-26-2011 at 11:01 AM.
#115
MM recommended earlier that yellow p1 , blue sec and yellow p2s would work better . I have not tried it .
Last edited by Brettus; 06-04-2011 at 05:48 PM.
#116
Sec and P2 should be the same injector. That is what I "recommend".
What I "recommend" is series II green injectors in the primary and up-flowed, matched blues in the secondary and P2 positions.
#117
a little loosely .
#118
Ok so green P1's and blue P2's and secondaries...this should be a good set up for BNR upgrade @10psi right? I cant find the green ones online though,gonna have to call the stealership.
#119
Dodging those Corollas
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From: Stouffville, Ontario, Canada
The RX8 is port fuel injected... Are the fuel injectors right before the opening to the combustion chamber?
In otherwords, are the fuel injectors after all of the SDAIS portion of the intake? Meaning if one puts Seafoam/BG44k into the gas tank, none of that stuff even remotely touches any of the SSV/VDI/APV ports?
In otherwords, are the fuel injectors after all of the SDAIS portion of the intake? Meaning if one puts Seafoam/BG44k into the gas tank, none of that stuff even remotely touches any of the SSV/VDI/APV ports?
#120
S2 Primary green injectors. Mazda part # N3R213250 You can get them through some of the online discount mazda parts dealers for about $150 each.
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