saturated vs peak and hold injectors
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saturated vs peak and hold injectors
i just want some basic knowledge on injectors. what are the differences in these two types and which is better for turbo charged cars? i just bought a car with 320 peak and hold injectors, i dont feel they are enough and picked up some 550 saturateds. i couldnt find any info on the differences between the injectors so thats why im posting...thanks
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Re: saturated vs peak and hold injectors (nolicense526)
either type of injectors will work. Peak and Hold need a resistor box where as the saturated injectors don't. It depends on what car you have to determine if they are drop in.
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the difference between peak and hold injectors and saturated is the resistance they operate at, hence the need for a resistor box. Depends on the ecu's injector driver
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Re: saturated vs peak and hold injectors (riceball777)
The only way you can feel if injectors are too small is if you CRANK the boost beyond what its tuned for (assuming its a Honda), and you FEEL your engine BLOW UP.
Otherwise you use a wideband to check AFR's and your EMS to check duty cycle, or do some rough math after putting it on a dyno. FYI 320's are only good for ~225 on an FI motor, assuming you aren't using an FMU. What CELERITAS said is the basic deal, no need to go beyond that for the OP. Just save yourself time and get peak/hold, or remove the resistor box and put your 550s' in...after you setup the basemap...
Otherwise you use a wideband to check AFR's and your EMS to check duty cycle, or do some rough math after putting it on a dyno. FYI 320's are only good for ~225 on an FI motor, assuming you aren't using an FMU. What CELERITAS said is the basic deal, no need to go beyond that for the OP. Just save yourself time and get peak/hold, or remove the resistor box and put your 550s' in...after you setup the basemap...
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Re: saturated vs peak and hold injectors (nolicense526)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nolicense526 »</TD></TR><TR><TD CLASS="quote">i couldnt find any info on the differences between the injectors</TD></TR></TABLE>
They both work. Make sure you run the correct impedance your injector drivers require, which for a Honduh is ~9.3-12 ohms give or take a little.
They both work. Make sure you run the correct impedance your injector drivers require, which for a Honduh is ~9.3-12 ohms give or take a little.
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Re: saturated vs peak and hold injectors (Joseph Davis)
obd0 civics have resistor boxes...obd1 + have saturated..saturated are not as accurate and peak an hold injectors
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Re: saturated vs peak and hold injectors (laocivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by laocivic »</TD></TR><TR><TD CLASS="quote">obd0 civics have resistor boxes...obd1 + have saturated..saturated are not as accurate and peak an hold injectors</TD></TR></TABLE>
That's an erroneous statement.
That's an erroneous statement.
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Re: saturated vs peak and hold injectors (Joseph Davis)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Joseph Davis »</TD></TR><TR><TD CLASS="quote">
That's an erroneous statement.</TD></TR></TABLE>
its true atleast at high rpms
That's an erroneous statement.</TD></TR></TABLE>
its true atleast at high rpms
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Re: saturated vs peak and hold injectors (KingOfQB)
Nope.
It's hard to say P&H injectors are more accurate when Honduhs run them across resistor boxes, and never feed them a peaking current to slam them open.
There's a whole lot of injector theory mumbo jumbo that can be, for all practical intents and purposes, completely disregarded. A number of the injector driver boxes on the market that interface with P&H injectors with no resistor box don't even bother to feed a peaking current, they are equipped with a burly IGBT and just saturate the injector and don't worry about it.
Pick your injectors based on size, and run a resistor box if you happen to get P&H/low Z injectors. Don't worry about one style vs the other.
It's hard to say P&H injectors are more accurate when Honduhs run them across resistor boxes, and never feed them a peaking current to slam them open.
There's a whole lot of injector theory mumbo jumbo that can be, for all practical intents and purposes, completely disregarded. A number of the injector driver boxes on the market that interface with P&H injectors with no resistor box don't even bother to feed a peaking current, they are equipped with a burly IGBT and just saturate the injector and don't worry about it.
Pick your injectors based on size, and run a resistor box if you happen to get P&H/low Z injectors. Don't worry about one style vs the other.
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Re: (Sr420Det)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sr420Det »</TD></TR><TR><TD CLASS="quote">How much hp do you think the 550cc saturated are worth. Using the stock fpr.</TD></TR></TABLE>
Here is a very basic guide we use when customers ask this question.
Flow Rate vs. HP Level
(Flow Rate for each injector,
in a four cylinder setup.)
310cc 200~220whp
370cc 220~280whp
440cc 280~330whp
550cc 330whp~380whp
660cc 380whp~425whp
720cc 425whp~475whp
880cc 475whp~525whp
980cc 525whp~600whp
Hope that helps.
Craig
Here is a very basic guide we use when customers ask this question.
Flow Rate vs. HP Level
(Flow Rate for each injector,
in a four cylinder setup.)
310cc 200~220whp
370cc 220~280whp
440cc 280~330whp
550cc 330whp~380whp
660cc 380whp~425whp
720cc 425whp~475whp
880cc 475whp~525whp
980cc 525whp~600whp
Hope that helps.
Craig
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