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Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

What injectors do I need?

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Old Apr 12, 2006 | 10:49 AM
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Default What injectors do I need?
Bolt ons, and a 230/224 cam. Maxxing out injectors at 114% duty cycle on the dyno last night (made 390hp/377tq). Once in a while I use a dry 75 shot of nitrous but can't see ever using more than a 100 shot.

Would 30# be enough or do I need 42#?
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Old Apr 12, 2006 | 01:18 PM
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30# SVO injectors will flow about 26# on our cars. That should do it.
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Old Apr 12, 2006 | 01:39 PM
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42's room to grow
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Old Apr 12, 2006 | 09:24 PM
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I just put 30s in my car, similar set up. They are just fine.
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Old Apr 13, 2006 | 07:00 AM
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i say go with the 42 lbers also.
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Old Apr 13, 2006 | 07:59 AM
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The 42#s are pretty easy to tune and can handle anything other then boost.
You'll never need to size again.
Hawk
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Old Apr 13, 2006 | 08:31 AM
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Originally Posted by 227Hawk
The 42#s are pretty easy to tune and can handle anything other then boost.
You'll never need to size again.
Hawk
I run these injectors with 20 PSI of boost ! (Cobalt SS Supercharged).
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Old Apr 13, 2006 | 08:53 AM
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run the 42#ers..LMK if you need a set
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Old Apr 13, 2006 | 10:17 AM
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Just for some information, I recently put SVO #30's on my car. With the current mods, I was at 68% duty cycle at WOT.
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Old Apr 13, 2006 | 12:53 PM
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Originally Posted by Steve Burger
30# SVO injectors will flow about 26# on our cars. That should do it.
30# SVO injectors will flow about 36# on our cars.
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Old Apr 13, 2006 | 01:05 PM
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42Lbs injectors are cheap and will allow plenty or room in case you decide to go a different route in the future.
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Old Apr 13, 2006 | 03:23 PM
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Originally Posted by jmc007
I run these injectors with 20 PSI of boost ! (Cobalt SS Supercharged).
Since the differential pressure is low (60 base PSI minus 20 manifold PSI) and I have only 4 injectors, they are already maxed out
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Old Apr 13, 2006 | 09:06 PM
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Originally Posted by jmc007
Since the differential pressure is low (60 base PSI minus 20 manifold PSI) and I have only 4 injectors, they are already maxed out
So i'm just guessing here but 'BOOST' requires more injector.


Hawk
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Old Apr 14, 2006 | 11:08 PM
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Originally Posted by 227Hawk
The 42#s are pretty easy to tune and can handle anything other then boost.
You'll never need to size again.
Hawk

My 42's served very well at 518 rwhp.
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Old Apr 19, 2006 | 09:53 AM
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I ended up with 42#'s, for free!!!
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Old Apr 19, 2006 | 09:55 AM
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Originally Posted by keliente
I ended up with 42#'s, for free!!!
Hmm.... lucky u
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Old Apr 19, 2006 | 09:56 AM
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Originally Posted by keliente
I ended up with 42#'s, for free!!!
nice!
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Old Apr 20, 2006 | 02:48 AM
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Originally Posted by xaon
30# SVO injectors will flow about 36# on our cars.
wrong again, 34.6
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Old Apr 20, 2006 | 07:34 AM
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Originally Posted by hondo
nice!
Yeah. My friend is trading in his WS6 for a GTO, and selling all the parts off of it. He gave me his almost brand-new injectors
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Old Apr 23, 2006 | 02:51 PM
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I would look at doing the fuel pump if you plan on running the Nitrous.
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