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Old 06-27-2019, 03:22 PM   #1
LS3_SPEED6
 
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Exclamation NEED HELP: Are these injectors enough for my power level?

Planning on getting FIC 660cc injectors as my tuner recommended them:

http://fuelinjectorclinic.com/IS303-0660H

Just wondering if these will be enough to support MAX 600whp? I won't be going with more power, but just curious how much whp are these injectors actually good for (say duty cycle at 90%)? Thanks.
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Old 06-27-2019, 03:57 PM   #2
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Are you boosted? Not sure if it matters but 550s for me were at 90% at 543 rwhp... If it is enough it would be close I think, but I am not a tuner or a pro just based on what I have seen on my car Jannety I think would recommned 1050s. They were very good at helping me...
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Old 06-27-2019, 03:59 PM   #3
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https://fuelinjectorclinic.com/hp-calculator
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Old 06-27-2019, 04:52 PM   #4
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Quote:
Originally Posted by race24x View Post
Are you boosted? Not sure if it matters but 550s for me were at 90% at 543 rwhp... If it is enough it would be close I think, but I am not a tuner or a pro just based on what I have seen on my car Jannety I think would recommned 1050s. They were very good at helping me...
Yeah I will be boosted with a P1x procharger. 9lbs max at redline.
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Old 06-27-2019, 04:54 PM   #5
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Originally Posted by dreksnot View Post
I did that, but not sure if I entered all the data correctly for the injectors.

# of Cylinders: 8
Fuel Pressure (psi): 58
Injector full flow value (size) in CC/Min: 765
Engine Aspiration: Supercharged
Duty Cycle: 80%
Fuel Used: Gasoline

Horsepower supported @ crankshaft: 979
Horsepower supported @ wheels: 832

If I entered that correctly, then they are way plenty for me. But again, I have no idea if the data I entered is correct and accurate.
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Old 06-27-2019, 05:06 PM   #6
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Should have asked: what fuel pump you using?
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Old 06-27-2019, 05:12 PM   #7
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Should have asked: what fuel pump you using?
ZL1 fuel pump.
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Old 06-27-2019, 05:22 PM   #8
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With a ZL1 pump, you'll likely be hitting a wall at 600rwhp, with it max'ed. Add a Boost-a-Pump and you'll get another 50hp. Those injectors should be able to make 700whp, give or take. But, for now, those injectors will outflow your pump. You'd be riding a fine line with that pump and 600whp.
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Old 06-27-2019, 05:34 PM   #9
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Quote:
Originally Posted by dreksnot View Post
With a ZL1 pump, you'll likely be hitting a wall at 600rwhp, with it max'ed. Add a Boost-a-Pump and you'll get another 50hp. Those injectors should be able to make 700whp, give or take. But, for now, those injectors will outflow your pump. You'd be riding a fine line with that pump and 600whp.
Ok thanks for the info! If it gets close to the fuel pump, are the Kenne Bell Boost a Pumps any good? I am really aiming for 530-550whp, but not sure how much more power I will make with the 3.7" vs 3.9" pulley. Could my tuner always dial it back power wise? Rather be conservative with the tune than on the edge.
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Old 06-27-2019, 05:43 PM   #10
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A KB BAP is good.

You tuner could back the power down with lowering timing, but the pulley will control your boost. The tuner will be able to see where you're at with fuel pressure with the boost, and recommend accordingly, with what pulley to go with.
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Old 06-27-2019, 05:45 PM   #11
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Quote:
Originally Posted by dreksnot View Post
A KB BAP is good.

You tuner could back the power down with lowering timing, but the pulley will control your boost. The tuner will be able to see where you're at with fuel pressure with the boost, and recommend accordingly, with what pulley to go with.
Ok cool I appreciate all the help and info!!
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Old 06-28-2019, 08:44 AM   #12
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Quote:
Originally Posted by LS3_SPEED6 View Post
I did that, but not sure if I entered all the data correctly for the injectors.

# of Cylinders: 8
Fuel Pressure (psi): 58
Injector full flow value (size) in CC/Min: 765
Engine Aspiration: Supercharged
Duty Cycle: 80%
Fuel Used: Gasoline

Horsepower supported @ crankshaft: 979
Horsepower supported @ wheels: 832

If I entered that correctly, then they are way plenty for me. But again, I have no idea if the data I entered is correct and accurate.
Oh nice

how will you be able to get that information ?
Fuel Pressure , Injector full flow value , Duty Cycle and the Gasoline


Sorry if I stole this thread
I am going boosted as well and I am using ID1050x
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TSP Stage 2 Boosted Cam 227/235 at 114 LSA
Fore Innovation Triple pump staged (Walbro 342 primary and 2x Walbro 450 secondaries)
Procharger D1x with a 3.85 pulley
ID1050x Injectors
Flex Fuel Sensor
Monster LT1 Twin Disk Clutch
Holley Sniper Efi Intake Manifold
NW 103mm Boosted TB
747rwhp at 12psi on E85
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Old 06-28-2019, 09:48 AM   #13
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Quote:
Originally Posted by rgrmoreira13 View Post
Oh nice

how will you be able to get that information ?
Fuel Pressure , Injector full flow value , Duty Cycle and the Gasoline

Sorry if I stole this thread
I am going boosted as well and I am using ID1050x
Fuel pressure: 58psi is the stock (non-boost referenced) ECU pressure
Flow rate: ID1050X - internet search 1229.6cc/min
Duty cycle: most like to use 90% as peak as closer to 100% gets nervy

Horsepower supported @ crankshaft: 1770
Horsepower supported @ wheels: 1505
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Old 06-28-2019, 02:46 PM   #14
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Quote:
Originally Posted by LS3_SPEED6 View Post
Ok thanks for the info! If it gets close to the fuel pump, are the Kenne Bell Boost a Pumps any good? I am really aiming for 530-550whp, but not sure how much more power I will make with the 3.7" vs 3.9" pulley. Could my tuner always dial it back power wise? Rather be conservative with the tune than on the edge.
For this power level the ZL1 fuel pump with the JRE FPCM should be fine. I had no problems going to 590 rwhp with that setup. I am only looking for the DSX Aux pump so I can run E85. L:ike someone said above ZL1 and JRE FPCM should be good to 600 rwhp. Not trying to talk you out of the BAP, but if you dont need it, not sure I would buy it.
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