When to upsize injectors?

RJayLo

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Just like the title says. Whats the point where the 19# injectors need be ditched for larger ones as far as bolt ons are concerned? Im thinking of putting on a cobra intake manifold and 70mm TB and maybe a 70mm MAF. I currently have exhaust mods. Are my stock injectors good enough for this or will I need to go with a larger size?
 

Paul

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Stock are fine for those mods. More than adequate in fact.
 

95 svt cobra

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more than plenty. You shouldnt worry about upsizing injectors until you start doing some mods to your motor, I:E H/C/I etc etc,
 

LAFENATU

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Stock 19lb injectors can handle around 300HP at or around a 90% duty cycle. 90% is high and at that point I would move onto 24lb.

I would say it is time to step up at when you hit about 260-280 RWHP to be safe. Like previously stated, your no where near that point right now.
 

Paul

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I'm going to run 19 lb injectors on my HCI 306! :uglystupid2:
 
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RJayLo

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LAFENATU said:
Stock 19lb injectors can handle around 300HP at or around a 90% duty cycle. 90% is high and at that point I would move onto 24lb.

I would say it is time to step up at when you hit about 260-280 RWHP to be safe. Like previously stated, your no where near that point right now.

Wha? My yellow NOS sticker should put me at 300ish about already.

Thanks everyone. Sounds like I am good for now :banana:
 

95 svt cobra

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Lol Paul :hammer:


Yeah man dont forget that tint adds 73 HP for every percent it is :thumb:
 

Paul

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95 svt cobra said:
Lol Paul :hammer:


Yeah man dont forget that tint adds 73 HP for every percent it is :thumb:

I'm serious! I really am going to run 19 lb injectors on my HCI 306!!! I figure they'll be pretty near their limit, but I don't really care. I'm not buying new injectors until if/when I put a turbo on it. :)

Paul.
 

5.0kid

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yah, i'm keeping the stockers also for now on my h/c/i. but it is a very mild h/c/i and i won't need the larger injectors until i get a little more power.
 

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