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Old Aug 2, 2017 | 08:02 PM
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Default Need help with fuel system

I'm getting a built block and aiming for more power.
My current setup is walbro 255lph, CJM stage 0 return/regulator, DW 600CC injectors. Stock rails.

What would be the max power I can expect from the current fuel system? What should be upgraded next? rails? Injectors? lines or pump?

Also any idea whats the max power/boost from a Greddy kit with TD05-18G?

Thanks
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Old Aug 3, 2017 | 06:36 AM
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Have you contacted Charles....THE Charles who is CJM?

Dude knows his fuel ****!
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Old Aug 3, 2017 | 10:42 AM
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with a stage 0 and 600cc injectors you may be able to hit 425whp.

upgrade your fuel system, fuel pump, and injectors simultaneously.

what are you using to tune?
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Old Aug 3, 2017 | 10:55 AM
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I have same fuel pump with 800 injectors and Haltech dynosty tuned my 18g's to 503 whp.

I've wondered if the new walbro (what-is-it?) 485 would be worth a retune or if I'd have to go twin pump for any real gains.
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Old Aug 3, 2017 | 01:48 PM
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Originally Posted by eZg
I have same fuel pump with 800 injectors and Haltech dynosty tuned my 18g's to 503 whp.

I've wondered if the new walbro (what-is-it?) 485 would be worth a retune or if I'd have to go twin pump for any real gains.
What held you back from going for more power? Fuel?
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Old Aug 3, 2017 | 01:53 PM
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Originally Posted by eZg
I have same fuel pump with 800 injectors and Haltech dynosty tuned my 18g's to 503 whp.

I've wondered if the new walbro (what-is-it?) 485 would be worth a retune or if I'd have to go twin pump for any real gains.
Originally Posted by SAMzG35
What held you back from going for more power? Fuel?
Do you have a return fuel system? and can you check the duty cycle of your injectors?

my duty cycle on my 1000cc is around 40% so I'd imagine 800cc is around 60% ... which means the fuel pump went first
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Old Aug 3, 2017 | 02:30 PM
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Originally Posted by bealljk
with a stage 0 and 600cc injectors you may be able to hit 425whp.

upgrade your fuel system, fuel pump, and injectors simultaneously.

what are you using to tune?
I'm currently on 461whp & 445wtq on dynojet with my current fuel system tuned with uprev.
New management might be PROEFI.
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Old Aug 3, 2017 | 04:44 PM
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^wow! Can you monitor your duty cycle?

how much boost?
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Old Aug 3, 2017 | 05:13 PM
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Originally Posted by bealljk
^wow! Can you monitor your duty cycle?

how much boost?
Nope. Don't think I can. At 11-12psi stock block looool
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Old Aug 3, 2017 | 06:41 PM
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Dear Colorado,

I'd like you to return all the horsepower you've stolen from me.

Your Friend,
James
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