gsrhb7

Im in the market for some after market injectors for my car. I have a hondata S200b. Are Peak and Hold or Saturated injectors better.

Thnaks

civickiller

peak and hold

gsrhb7

anyonme esle

non-VTEC

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civickiller &raquo;</TD></TR><TR><TD CLASS="quote">peak and hold</TD></TR></TABLE>

why?

BlueShadow

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by non-VTEC &raquo;</TD></TR><TR><TD CLASS="quote">why?</TD></TR></TABLE>

Two of the differences between P&H and Saturated injectors is in their speed and the amount of heat they generate.

The P&H injectors have faster response times (they open/close faster), making them more ideal for high HP. The downside is these types of injectors run a a tad bit hotter then Saturated type injectors, and over time this will cause the P&H injectors to fail earlier then Saturated injectors.

Saturated injectors have slower response time, but they dont run as hot as P&H injectors. And because of their slow response times you wont see them for large sizes (IE 1000cc). P&H injectors on the other hand are easily available in 1000+ cc sizes.

EDIT: oh yah, dont forget the differences in wiring. If your car (or ECU if your car is swapped) normally uses saturated injectors then you'll want to run resistors or a resistor box so that you dont fry your ECU/EMS injector drivers.



Modified by BlueShadow at 5:01 PM 1/25/2005

h22 civic

^^^^what he said^^^^^

adseguy

Thanks BlueShadow I learned something today.

NVturbo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueShadow &raquo;</TD></TR><TR><TD CLASS="quote">

EDIT: oh yah, dont forget the differences in wiring. If your car (or ECU if your car is swapped) normally uses saturated injectors then you'll want to run resistors or a resistor box so that you dont fry your ECU/EMS injector drivers.
Modified by BlueShadow at 5:01 PM 1/25/2005</TD></TR></TABLE>That's exactly what I have been trying to tell these two guys I know. Yeat..they want to learn **** the hard way since the performance is the same...they say. Anyways!!

igo4bmx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueShadow &raquo;</TD></TR><TR><TD CLASS="quote">
EDIT: oh yah, dont forget the differences in wiring. If your car (or ECU if your car is swapped) normally uses saturated injectors then you'll want to run resistors or a resistor box so that you dont fry your ECU/EMS injector drivers.
Modified by BlueShadow at 5:01 PM 1/25/2005</TD></TR></TABLE>

well are they mechanically different? i mean if you run peak and hold with resistors to make it run with a saturated injector type ecu... is it in essense making it run saturated and receiving no benefit?

BlueShadow

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by igo4bmx &raquo;</TD></TR><TR><TD CLASS="quote">well are they mechanically different? i mean if you run peak and hold with resistors to make it run with a saturated injector type ecu... is it in essense making it run saturated and receiving no benefit?</TD></TR></TABLE>

The reason for the resistors/resistor box is because you need to limit in the amount of current or amps or whatever that is needed to run the two types of injectors. The P&H still generate more heat and have the faster response times then the Saturated. These mechanical differences wont change when you add resistors, the resistors take care of the electrical differences between the injectors.

Injectors are either Peak and Hold aka. Low Impedance (2.5-3 OHM) or they are Saturated injectors which are High Impedance (12-15 OHM). I'm not an electronics expert, but a long time ago somebody on RX7club.com explained it to me like this:

If you run P&H/low impedance injectors in an ECU/EMS designed for high impedance you'll burn out the injectors drivers in the ECU/EMS. To avoid this you need to wire in resistors or a resistor box. OHMs is a measure of resistance, so by adding resistors you raise the OHM rating of the P&H injectors from 2.5-3 OHMs to 12-15 OHMs. By raising the OHM rating you limit the amount of Amps or Volts (I cant remember which) that is in the system.

Now if you are running Saturated/high impedance injectors with an EMS/ECU designed for low impedance injectors you will be fine without wiring in any resistors.

HTH

AzntaggeR

^^^ thats very useful information.

DaX

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gsrhb7 &raquo;</TD></TR><TR><TD CLASS="quote">Im in the market for some after market injectors for my car. I have a hondata S200b. Are Peak and Hold or Saturated injectors better.

Thnaks</TD></TR></TABLE>

Ask yourself what your horsepower goals are. If you're going to need an injector much larger than 550cc/min, you'll need P&H. From what I've seen, high flow Saturated injectors are more expensive compared to their P&H counterparts.

T-RO

Resistor boxes below... lol

SpdFrk

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DaX &raquo;</TD></TR><TR><TD CLASS="quote">

Ask yourself what your horsepower goals are. If you're going to need an injector much larger than 550cc/min, you'll need P&H. From what I've seen, high flow Saturated injectors are more expensive compared to their P&H counterparts.</TD></TR></TABLE>

Actually, RC offers 750cc saturated injectors now.

ssr_h22

too bad they dont offer 850cc saturated. is wiring the resistor box hard

justagsr

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ssr_h22 &raquo;</TD></TR><TR><TD CLASS="quote">is wiring the resistor box hard</TD></TR></TABLE>

No.

http://hondata.com/techinjectorwiring.html

https://honda-tech.com/zerothread?id=736737

Teglove2

BTW GUYS IM SELLING A SET OF SEIMEN DEKA 750CC(p&h) INJECTORS WITH RESISTOR BOX FOR $250 PLUS SHIPPING
BRAND NEW
PM ME

DaX

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by justagsr &raquo;</TD></TR><TR><TD CLASS="quote">

No.

http://hondata.com/techinjectorwiring.html

https://honda-tech.com/zerothread?id=736737

</TD></TR></TABLE>

I also did a writeup in the Knowledge Base. Just search for 'resistor box'

B18CXr

Actually, RC offers 750cc saturated injectors now.

Yep, I've used them many times and they idle fine.

gsrhb7

Im looking for 300 whp on my b16 in a EG. So should i go with RC 550cc SATURATED? Or do i need bigger injectors. Stock intervals for now

shermanyang

iTrader: (1)

just get the peak and hold and save yourself the headaches.

093turbo16

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueShadow &raquo;</TD></TR><TR><TD CLASS="quote">

If you run P&H/low impedance injectors in an ECU/EMS designed for high impedance you'll burn out the injectors drivers in the ECU/EMS. To avoid this you need to wire in resistors or a resistor box. OHMs is a measure of resistance, so by adding resistors you raise the OHM rating of the P&H injectors from 2.5-3 OHMs to 12-15 OHMs. By raising the OHM rating you limit the amount of Amps or Volts (I cant remember which) that is in the system.
Now if you are running Saturated/high impedance injectors with an EMS/ECU designed for low impedance injectors you will be fine without wiring in any resistors.
</TD></TR></TABLE>

V=I*R

or voltage = current * resistance so if you raise resistance, you lower current.

BlueShadow

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93turbo16 &raquo;</TD></TR><TR><TD CLASS="quote">V=I*R

or voltage = current * resistance so if you raise resistance, you lower current.</TD></TR></TABLE>

Yup, you're right it would lower the current which would be amps. The guys that explained it to me a long time ago showed me the V=IR formula too. That was a few years ago, when I was trying to learn just the basics. But I didn't think it was necessary to post it here because I was afraid it woul just confuse people.

093turbo16

iTrader: (2)

There is really no other way to show it.. I am pretty sure that is a form of ohms law. Resistance is just a constant of proportionality relating voltage and current (in amps).

ssr_h22

more info. someone clear all of this up and make it short and sweet. i am wanting to hit 500 whp. what injectors should i get. 1000cc peak and hold. i am using hondata most likely