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Bigger injectors with heads and cam?

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Bigger injectors with heads and cam?
Old January 7th, 2013, 02:48 AM   #1
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Bigger injectors with heads and cam?

I've search this topic quit a bit but still no solid answer. I'm going Greg good heads and cam, from what I've read some get away with stock injectors but there about maxed out. I've found that the 300zx side feeds are 370cc and will drop right in. That is a 35lb injector vs a stock 29lbs. Does this sound like something that would be worth while or should I just stay stock?


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Old January 7th, 2013, 07:42 AM   #2
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At 6000 RPM you have 21ms of injector duty cycle to work with. If I recall, the stockers are indeed about maxed-out using somewhere around 18+ ms at 6K on the stock tune. If you go larger, you'll need to change (scale) the injector duty cycle via SCT (or VEC, AEM, other) in order to dial it in to your 'actual' fuel demands. I think the stock fuel system can support a bit larger fuel demand (since you aren't dramatically increasing your fuel needs). Its too bad the stock injectors don't have much additional flow to work with.
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Old January 7th, 2013, 08:16 AM   #3
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That what I was hopping for just adding a bit more of an injector with the stock fuel system. Ill be having Todd at a&c running it.


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Old January 7th, 2013, 08:48 AM   #4
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I put a Gen 3 intake setup on and used Gen 3 injectors they are a little bigger as well. Got everything from Scharfs for a good price and it all bolted right on.
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Old January 7th, 2013, 09:15 AM   #5
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I put a Gen 3 intake setup on and used Gen 3 injectors they are a little bigger as well. Got everything from Scharfs for a good price and it all bolted right on.
Well I'm looking at maybe 100 bucks for these injectors. They came on a few Nissan cars. I've got to much invested in my gen 2 intake to get rid of it


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Old January 7th, 2013, 12:20 PM   #6
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As long as your not going over 600rwhp the stock fuel system seems to be fine. I still run 100% stock fuel system and tune and its fine at 585rwhp (545 on mustang dyno).
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