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Old 05-10-2012, 03:16 PM   #1
Cpanthers85
 
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Injector Expierenced Help. Please...

I am tearing into the Camaro to slap a EFORCE SC on and a LS9 Cam in (AFM/DOD Delete).

I was just talking to a local performance shop, and he told me that the 52lb injectors that come with the Eforce aren't going to be enough to support my Headers and CAI and a tune. He said the 52lb injectors are just enough for the stock Eforce kit on the stock car.

I am running the JRE Fuel Rail Upgrade Kit and a ZL1 Fuel Pump. I am also running a 3.5 Pulley.

If you need any other information, let me know.

But can someone (esp a vendor on here) please let me know what size injector I need to be running? Or if the stock 52lb will work fine...

I have no idea how to calculate it out and I don't want to slap the car on a dyno, to be told I need to run a 60lb injector, tear the car apart again, and have to pay twice for a dyno tune. any help in advance, I'd greatly appreciate it!
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Old 05-10-2012, 03:38 PM   #2
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The 52's are working fine for my EForce setup with LT headers and RotoFab intake.
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Old 05-10-2012, 03:40 PM   #3
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With a LS3 you're gonna need at least 60's, with a L99 the 52's will be borderline, so if you are planning on stepping up the power any more you might as well do the bigger injectors now...
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Old 05-10-2012, 03:51 PM   #4
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Get bigger injectors. They might work fine but one can go lean, as happened to BullF16 and then eat your cylinder.

No reason not to upgrade.
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Old 05-10-2012, 04:09 PM   #5
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Upgrade to #65!!!!
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Old 05-10-2012, 04:33 PM   #6
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What kind of horsepower are we talking about?
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Old 05-10-2012, 05:09 PM   #7
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Thanks for the replies. If my calculations serve me correctly, I am guessing between 550-600 to the wheels on a A6. I a not expecting big boost numbers because of the headers.

The biggest injector I see for the EForce is 60#
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Mods: Kooks Long Tube Headers, RotoFaB EForce CAI, American Thunder Catback Exhaust, PFADT Stage 1 Drag Kit + Front Sway Bar, GM Strut Tower Bar. ZL1 Fuel Pump. Nitto NT05R. RX Catch Can.LS9 Cam and Springs.LS3 Conversion.JRE Fuel Rail Upgrade.Edelbrock Eforce.60# Eforce Injectors.Extreme Racing Tune. 523/495

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Old 05-10-2012, 05:58 PM   #8
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Look at the ID850's. They will cost you some cash but worth every dollar. Talk with Ted @ JRE and it will get you a good price.


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Old 05-10-2012, 06:05 PM   #9
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The 52's will be fine but if you add anything else you will need bigger. I have a very similar setup making 570 rwhp and never see over 85% idc.
That said I'm just got ID 850's that are going in next week only because I'm going to a smaller pulley.
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Old 05-10-2012, 06:22 PM   #10
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call eforce tell them to send u there 63 lb ... they should able to swap them for u ..
my whipple car with 63lb and worked great until i changed motors..
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Old 05-10-2012, 06:29 PM   #11
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You need 60# minimum for 600rwhp, or 720 crank hp on an A6. Again, do not skimp on fueling for a FI motor. I had 65# FAST injectors on 715 RWHP and lost my #5 piston top ringland....i beat the crap out of the motor though trying to break it....oh, i succeeded at that. Still drives fine, just blows lots of oil thru the breather.
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Last edited by BullF-16; 05-10-2012 at 08:42 PM.
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Old 05-10-2012, 10:17 PM   #12
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ID-850's are the way to go. Kinda spendy but worth it.
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Old 05-10-2012, 10:36 PM   #13
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What worth it about a ID-850 id would like to know why even one think its worth it to spend twice as much.
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Old 05-11-2012, 11:34 AM   #14
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I have similar mods as you, except mine is a manual. E-Force S/C w/52# injectors, Jannetty fuel rail upgrade, Kooks 1 7/8 LT headers. hi-flow cats and Roto-Fab CAI. After a dyno tune it was running out of fuel @ 6500 rpm. The tuner reduced the rev limiter to 6000. My tuner just installed 72# injectors. It isn't close to running out of fuel now and rev limiter is bsck up to 6500 rpm.
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Old 05-11-2012, 01:42 PM   #15
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Quote:
Originally Posted by sscamaro View Post
I have similar mods as you, except mine is a manual. E-Force S/C w/52# injectors, Jannetty fuel rail upgrade, Kooks 1 7/8 LT headers. hi-flow cats and Roto-Fab CAI. After a dyno tune it was running out of fuel @ 6500 rpm. The tuner reduced the rev limiter to 6000. My tuner just installed 72# injectors. It isn't close to running out of fuel now and rev limiter is bsck up to 6500 rpm.
I was hoping you'd chime in! Where did you find 72# injectors for the Eforce?
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Mods: Kooks Long Tube Headers, RotoFaB EForce CAI, American Thunder Catback Exhaust, PFADT Stage 1 Drag Kit + Front Sway Bar, GM Strut Tower Bar. ZL1 Fuel Pump. Nitto NT05R. RX Catch Can.LS9 Cam and Springs.LS3 Conversion.JRE Fuel Rail Upgrade.Edelbrock Eforce.60# Eforce Injectors.Extreme Racing Tune. 523/495

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Old 05-12-2012, 10:30 AM   #16
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Quote:
Originally Posted by Cpanthers85 View Post
I was hoping you'd chime in! Where did you find 72# injectors for the Eforce?
I got them from my tuner.
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