Best injector setup for BNR/Greddy turbo setup
#1
Boosted Marine
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Best injector setup for BNR/Greddy turbo setup
I'm in the middle of an engine rebuild and while my engine is out I would like to upgrade my injectors. I am also planning on upgrading to the Walbro fuel pump. Do I just need to change the P2 position or what? I understand some have swapped in blues or uncapped yellows, I would like to get the fuel setup right from the beginning. Thanks in advance.
#2
Boosted Kiwi
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I'm in the middle of an engine rebuild and while my engine is out I would like to upgrade my injectors. I am also planning on upgrading to the Walbro fuel pump. Do I just need to change the P2 position or what? I understand some have swapped in blues or uncapped yellows, I would like to get the fuel setup right from the beginning. Thanks in advance.
Next question .....
Last edited by Brettus; 06-23-2011 at 03:34 PM.
#3
iDüber
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I also just got my engine rebuilt. while tuning mazdamaniac said my afr's went lean under WOT and was causing detonation.
My fuel pump has 90,000 miles, 20,000 boosted so I figured I am going to get the Walbro fuel pump also.
The only thing I am not sure of is what injectors I should get to obtain the most reliable power.
My fuel pump has 90,000 miles, 20,000 boosted so I figured I am going to get the Walbro fuel pump also.
The only thing I am not sure of is what injectors I should get to obtain the most reliable power.
#4
Registered
I also just got my engine rebuilt. while tuning mazdamaniac said my afr's went lean under WOT and was causing detonation.
My fuel pump has 90,000 miles, 20,000 boosted so I figured I am going to get the Walbro fuel pump also.
The only thing I am not sure of is what injectors I should get to obtain the most reliable power.
My fuel pump has 90,000 miles, 20,000 boosted so I figured I am going to get the Walbro fuel pump also.
The only thing I am not sure of is what injectors I should get to obtain the most reliable power.
I always start rich an work towards leaner, it's easier than engine replacement.
#5
Boosted Marine
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#7
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I'm not exactly sure if I want a remanufactured one, I'd rather get one straight out of an automatic. Unless I find one on here i'm going to search junkyards I guess
#8
I have also been wondering about this for a while...
I just received my Greddy Turbo Kit w/ upgraded turbo, and I figure I will need to upgrade the fuel system while I am at it.
I already plan on doing the Walbro pump, but how do I know what size injectors to get?
I see some say you need to get much bigger, like the 650cc injectors from RC Engineering, and then others say just to use the blue 4 ports.
I plan on eventually getting up above 300whp, so are the blue injectors sufficient enough for this?
Thanks, Sean.
I just received my Greddy Turbo Kit w/ upgraded turbo, and I figure I will need to upgrade the fuel system while I am at it.
I already plan on doing the Walbro pump, but how do I know what size injectors to get?
I see some say you need to get much bigger, like the 650cc injectors from RC Engineering, and then others say just to use the blue 4 ports.
I plan on eventually getting up above 300whp, so are the blue injectors sufficient enough for this?
Thanks, Sean.
#10
The Stink w.o The Sause
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when you are upgrading injectors, it is important to consider what engine management you are using as this plays into injector staging. Personally, I plan on running yellow, blue, blue ... should be enough for 300 - 330 rwhp ... I think that is the optimal set-up if you are using COBB
oh and I DO plan to upgrade the fuel pump
oh and I DO plan to upgrade the fuel pump
Last edited by stinksause; 03-31-2011 at 01:17 PM.
#15
Boosted Marine
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"GB Fuel Injector - Direct OE replacement
2004 Mazda RX-8 Base 2 Cyl 1.3L -- GB MULTI PORT INJECTOR, REMANUFACTURED -- A high quality, direct fit OE replacement multi port injector; Features orifices that provide better fuel atomization, which is beneficial in reducing emissions; With GB's 12-month or 15,000-mile warranty.
Part Number: G5842-12331
Fit Note: Automatic Transmission, OEM# : N3H113250A, N3H313250A
Type: Direct OE replacement
Condition: Remanufactured
Quantity Sold: Sold individually"
#16
Banned
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This is wrong. Always put the largest injectors in the P2 position. The secondary (what you just called "aux") injectors are behind a valve and aren't always available for supplemental fueling. Additionally, they are partially tapered out of the equation relatively early in the RPM band.
The "green" injectors from the SII are the best choice for the primary 1.
The "green" injectors from the SII are the best choice for the primary 1.
Last edited by MazdaManiac; 04-26-2011 at 10:54 AM.
#20
Registered RX8 Nut
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When I look them up on line they say, Housing or Manifold.
Also, denso shows the same part # for 2009 as 2004-2008 but is not showing anything for 2010. So did they switch to green injectors in 2010?
#22
Registered RX8 Nut
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is the following a shitty version of the blues? and at $41 a piece are these going to crap out on me sooner rather than later?
"GB Fuel Injector - Direct OE replacement
2004 Mazda RX-8 Base 2 Cyl 1.3L -- GB MULTI PORT INJECTOR, REMANUFACTURED -- A high quality, direct fit OE replacement multi port injector; Features orifices that provide better fuel atomization, which is beneficial in reducing emissions; With GB's 12-month or 15,000-mile warranty.
Part Number: G5842-12331
Fit Note: Automatic Transmission, OEM# : N3H113250A, N3H313250A
Type: Direct OE replacement
Condition: Remanufactured
Quantity Sold: Sold individually"
"GB Fuel Injector - Direct OE replacement
2004 Mazda RX-8 Base 2 Cyl 1.3L -- GB MULTI PORT INJECTOR, REMANUFACTURED -- A high quality, direct fit OE replacement multi port injector; Features orifices that provide better fuel atomization, which is beneficial in reducing emissions; With GB's 12-month or 15,000-mile warranty.
Part Number: G5842-12331
Fit Note: Automatic Transmission, OEM# : N3H113250A, N3H313250A
Type: Direct OE replacement
Condition: Remanufactured
Quantity Sold: Sold individually"
#24
SPOOLN8
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I'm hoping to hit 350whp eventually, my understanding was always
P1 - Green
Secondary - Blue
P2 - Blue
would be sufficient for that goal.
Didn't realize they meant modified blue for the secondary though?
P1 - Green
Secondary - Blue
P2 - Blue
would be sufficient for that goal.
Didn't realize they meant modified blue for the secondary though?
#25
Registered RX8 Nut
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I will be putting some modied yellows and pink denso injectors up for sale. The pink denso injectors were flow tested and flow 10% less then modified yellows.
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