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Author
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Topic: Whats the diff between low and high impedance injectors?
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50DADDY
CAFords OG
Member # 3076
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posted
 
 
What is the difference between them and why would you use low impedance over high.Im putting some either 55 or 86lb injectors in my car and want to know if i need to change the computer(like use a tweecer).
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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Fostang
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Member # 3752
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posted
You can't run low impedence injectors with a stock computer unless using an injector driver.
I don't have experience with injector drivers and my first instincts is to not trust them though. I feel that your fooling the computer into running something that it was not designed to run so you will loose some resolution thus making it hard to tune the car. But this is simple speculation.
If you do happen to install low impedence injectors in your ride with stock electronics.. it'll idle but the first time you take it around the block your eec will be up in smoke.
If you want to run low impedence injectors I'd just go with F.A.S.T. or DFI or BigStuff etc etc. Even the AEM system requires a driver.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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Fostang
¯
Member # 3752
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posted
BTW siemens decka now makes high impedence 65lb injectors. ![[Eek!]](eek.gif)
Which will support more hp than your stock block will handle.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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50DADDY
CAFords OG
Member # 3076
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posted
Do you think 55lb injectors would work for 6-700 HP?
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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Fostang
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Member # 3752
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posted
quote:
Originally posted by 50DADDY:
Do you think 55lb injectors would work for 6-700 HP?
FW or RW?
FW yes.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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50DADDY
CAFords OG
Member # 3076
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posted
Huh????
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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Fostang
¯
Member # 3752
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posted
flywheel rearwheel duh.
Why would I say front wheel.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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50DADDY
CAFords OG
Member # 3076
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posted
Oh yeah,duh....
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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Fostang
¯
Member # 3752
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posted
I would really recomend half filling your block and adding a girdle.
To get 7-8 hun. hp from a 306 will take about 15 psi depending on HCI.
Then another thing are those twin t4's even going to be able support 800 hp? I thought they are each rated for like 250 hp. So twins maxed out your only looking at about 400 rwhp @ about 5500 rpms MAX. Other wise bye bye turbos. Which 42lb injectors will be sufficient.
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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
68’ Pony Convertible
66’ Pony Coupe
Posts: 3011 | From: Stockton/Danville | Registered: Nov 2003
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50DADDY
CAFords OG
Member # 3076
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posted
Theyre stage 5 turbos.Should be capable of supporting about 500 each.At least thats what the manufacturer says.
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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."
"Old age and treachery shall overcome youth and skill."
Posts: 4827 | From: Suckramento | Registered: Jul 2003
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