370cc stock injectors + 300hp = ok?

Discuss the RB20, RB25 and RB26 series engines.
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krayton
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Any opinions on pushing for 270-300hp on stock injectors?

id like to tune for that ball park, but im a little worried about the injectors. i plan on upgrading soon, but i have some track events i need to do before so.

any help would be great.


Joe
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they are fine you sissy, get your car ready for firebird.

seriously, i think youll be ok with near 300.

Ramius83
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We ran 350+ HP on the 370cc injectors on our Maximas. So, you are perfectly fine.....

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krayton
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awesome good to hear.

y3llows14
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I dont know. On my rb25det running 10psi with gt3251e, my injector duty cycle is already at 98%, guess I could get more with Nismo FPR. Dont know how much power Im making though.

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krayton
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y3llows14 wrote:I dont know. On my rb25det running 10psi with gt3251e, my injector duty cycle is already at 98%, guess I could get more with Nismo FPR. Dont know how much power Im making though.
what are you using to tune?

when i slapped the t3/t4 turbo on and tried to run it at 10psi with no tuning, the car drowned itself in fuel. my afr was below 10, off the scale.

y3llows14
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It has a power fc, 3" piping all the way, and gtr intercooler. No wideband. Stock map on power fc.

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biglipzit
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Car: sr20det S13 RHD 200SX

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Sorry to bring up old thread but someone mentioned 350hp on stock injectors. I got stock injectors and 2.5 inch intercooler piping with upgraded turbo and i am pushing 14psi of boost 24/7. I have a switch for 18psi. Woudl my stock injectors handle 18 psi and what type of boost was the 350HP done on?

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Nameless EJ6
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Generally.. the max flow rating on injectors is close to the maximum power potential they'll give you.. with good tuning.

example: 350cc = around 300hp, 800cc = around 700hp...

You get the idea.

biglipzit, If you want to know how hard your injectors are working, measure their duty cycle as you increase boost.

btw, hopefully you're tuned for hitting that button.

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themadscientist
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I doubt it, better get some S15 480s, RB25 right? above 300 is not impossible but risky for no good reason. For 300 totally fine.

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biglipzit
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Car: sr20det S13 RHD 200SX

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Thanks for the great response. How do i got about measuring my injector duty cycles? I was perfeclty tuned for that button before my IC and piping upgrade which freed up my system. I use to run 11psi daily and flipping the switch brought me up to 14psi but now my car is running 14psi at the 11psi setting and it runs rich the whole way through the rpm range. I got a mines ecu. I am unsure to what it is tuned for though.


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