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big fuel injectors with stock pcm

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Old 11-17-2006, 07:54 AM
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Default big fuel injectors with stock pcm

what should i do if i want to install more then 75 lb injectors in my lsx engine and stick to my factory pcm?
Old 11-18-2006, 09:13 AM
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You can get up to a 96lb/hr hi imp injector from Venom Performance. Summit is a distributor for them. The 96 lb/hr pn# is VNM-HP696-8 and cost is $689.95. I've got a set actually being delivered today. Lead time is pretty long since they are custom made (1-2 months). It will be a few months before I get my project to the point of tuning them, but I know of a few that have used them successfully. Idle tunning is the biggest challenge.
Old 11-18-2006, 09:26 AM
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You can't just run 96ers, you need an impedance converter like the Acceleronics unit...

Are those 75ers Hi or Lo Z injectors?
Old 11-18-2006, 09:33 AM
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i am using 70 lb @ 58 PSI high amp seimes and thay can be used as 85 lb @ 87 PSI but at that pressure the fuel will be very hot.
Old 11-18-2006, 09:38 AM
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Originally Posted by ozws6
You can get up to a 96lb/hr hi imp injector from Venom Performance. Summit is a distributor for them. The 96 lb/hr pn# is VNM-HP696-8 and cost is $689.95. I've got a set actually being delivered today. Lead time is pretty long since they are custom made (1-2 months). It will be a few months before I get my project to the point of tuning them, but I know of a few that have used them successfully. Idle tunning is the biggest challenge.

thank you very much
Old 11-18-2006, 09:39 AM
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Originally Posted by Frost
You can't just run 96ers, you need an impedance converter like the Acceleronics unit...

Are those 75ers Hi or Lo Z injectors?

where can i get one?
Old 11-18-2006, 09:48 AM
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Originally Posted by Frost
You can't just run 96ers, you need an impedance converter like the Acceleronics unit...
Venom Performance produces High Impedence 96 lb/hr injectors.
Old 11-18-2006, 09:50 AM
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Originally Posted by ozws6
Venom Performance produces High Impedence 96 lb/hr injectors.
I have read that the Venom injectors are just drilled injectors though; they are a modded part; isn't this true? Seems like there is a large debate thread in the FI section over those things from a while back, but I can't seem to find it using search this morning Seems like whatever process they used produced flow #s that varied a lot.
Old 11-18-2006, 10:02 AM
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The Venom injectors are manufactured in house by them. They can build injectors from 19 lbs/hr to 96 lbs/hr (high imp) or 180 lbs.hr (low imp). They are guaranteed to be to within +/- 1.5% of the nominal flow. Here is a link to their website. http://www.venom-performance.com/nf/...niInjector.cfm

I wasn't aware of the bad rap they had gotten over in the Forced Induction forum. I might have mine flow tested if I can find someone local to check them just to be safe.
Old 11-18-2006, 10:02 AM
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ok, where can i get the converter form?
Old 11-18-2006, 11:12 AM
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One low impedence injector driver that is popular is the Versafueler (http://www.acceleronics.com/versafueler.htm). Only downside to it is having to splice it into your wiring harness.

I've got the Venom 96 lb/hr injectors in hand. A local performance shop has a fuel injector flow bench on order. In 2-4 weeks I should have some info on flow variation.
Old 11-18-2006, 11:31 AM
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ok then let us know
take care
Old 11-18-2006, 04:25 PM
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Question ???

Originally Posted by hesham
i am using 70 lb @ 58 PSI high amp seimes and thay can be used as 85 lb @ 87 PSI but at that pressure the fuel will be very hot.
87PSI?? Is that obtained with a boost referenced regulator??
Old 11-19-2006, 01:17 AM
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Originally Posted by Old Geezer
87PSI?? Is that obtained with a boost referenced regulator??


http://www.lingenfelter.com/store/ln10070.html
Old 11-19-2006, 07:34 AM
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Exclamation That statement is...

likely true.
However, if you are using the elevated PSI to add fuel to your FI setup, the additional pressure they will see, could make them erratic.
IE: 87PSI base setting on the regulator,[in order to get the added flow] + the added pressure that the boost will ad, [say 10psi], you are now expecting the system to function at 100psi....I've not tested injectors at 100#, but I see many that won't handle 70, and remain linear. Some, such as the Delphi's, often shut off at/near the 70# area.

I'm not trying to "rain on your parade". I'd suggest you look at alternatives, before you find yourself w/ a system that may/may not, give you the reliability you need.

Back to
Old 11-19-2006, 08:56 AM
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ok then what are my optins here?
should i go with the venom injectors or
should i get a converter or
should i waite for now injectors to come in the mrkets?
Old 11-19-2006, 10:13 AM
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Talking Perhaps..

Originally Posted by hesham
ok then what are my optins here?
should i go with the venom injectors or
should i get a converter or
should i waite for now injectors to come in the mrkets?
Look into the mentioned, Versafueler. This would allow you to stay w/ the stock ECM.
My preference 4 Big HP applications: use an aftermkt system, such as the FAST, BS3, etc, and be done with using bandaids.

Back to cleaning injectors...
Old 11-19-2006, 10:26 AM
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i think buying a standalone computer is weast of money coz people are getting 1000+ hp with hp tuners
Old 11-19-2006, 02:59 PM
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Default Then..

Originally Posted by hesham
i think buying a standalone computer is weast of money coz people are getting 1000+ hp with hp tuners
maybe copy their set up???
Old 11-19-2006, 04:15 PM
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Originally Posted by Old Geezer
maybe copy their set up???

where r the hp tuners backup lol



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