What is the difference between the HFS-1 and the HKS-5?
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From: Springfield, Mo
What is the difference between the HFS-1 and the HFS-5?
Specifically, what are the key differences? I have searched & just cant find the answer. Thanks guys.
Last edited by CrackerJackToy; Nov 26, 2007 at 06:53 PM.
https://www.evolutionm.net/forums/sh...8&postcount=40
The main differences between the two systems:
1) Single stage and progressive with fuel flow
2) Inline valve: on/off (standard speed valve) vs PWM (High Speed valve)
3) Comes with a 22cc surge arrestor/accumulator (HFS-5)
The similarity between the two:
4) 150W/125psi shurflo pump
5) DDS3-v8 fail-safe flow monitoring system (with dash gauge)
6) All necessary fittings and wire harness
7) Neither system comes with a tank
8) Three jets + 2x Nickel plated Brass hard pipe adaptor
9) Y-piece for twin jet operations.
10) 100 micron inline fliter
HFS-1 to HFS-5 upgrade path.
Online readings:
https://www.evolutionm.net/forums/sh...d.php?t=263787 (HFS-5)
https://www.evolutionm.net/forums/sh...d.php?t=259743 (HFS-5 - insight into the design)
Detailed Installation:
http://www.srtforums.com/forums/showthread.php?t=338924 (HFS-5 on SRT4)
http://www.srtforums.com/forums/showthread.php?t=334573 (HFS-5 on SRT4)
As the HFS-1 is not yet shipped: the following link is the best representation:
https://www.evolutionm.net/forums/sh...d.php?t=239686 (HFS-1)
The main differences between the two systems:
1) Single stage and progressive with fuel flow
2) Inline valve: on/off (standard speed valve) vs PWM (High Speed valve)
3) Comes with a 22cc surge arrestor/accumulator (HFS-5)
The similarity between the two:
4) 150W/125psi shurflo pump
5) DDS3-v8 fail-safe flow monitoring system (with dash gauge)
6) All necessary fittings and wire harness
7) Neither system comes with a tank
8) Three jets + 2x Nickel plated Brass hard pipe adaptor
9) Y-piece for twin jet operations.
10) 100 micron inline fliter
HFS-1 to HFS-5 upgrade path.
Online readings:
https://www.evolutionm.net/forums/sh...d.php?t=263787 (HFS-5)
https://www.evolutionm.net/forums/sh...d.php?t=259743 (HFS-5 - insight into the design)
Detailed Installation:
http://www.srtforums.com/forums/showthread.php?t=338924 (HFS-5 on SRT4)
http://www.srtforums.com/forums/showthread.php?t=334573 (HFS-5 on SRT4)
As the HFS-1 is not yet shipped: the following link is the best representation:
https://www.evolutionm.net/forums/sh...d.php?t=239686 (HFS-1)
Thread Starter
Evolved Member
iTrader: (24)
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From: Springfield, Mo
Man, I am very un-educated when it comes to meth injection. I think its the next step for me but its like reading spanish what you just posted. Sad part is, ive been researching meth injection for over a year now. I know the basics, how it works etc. And i know the aquamist has one of the best failsafes on the market, and I have a understanding how the failsafe works along with the MAC valve for my mbc setup, but the inline valve and high speed valve, im clueless about...along with the surge arrestor.
So the HFS-5 is a progressive setup? So with the HSF-1, with it not being a progressive setup your going to 'feel' the meth kicking in?
I had originally planeed going with the HFS1 setup... as the HFS-5 just seemed really expensive & a bit more than I was wanting to pay.
So the HFS-5 is a progressive setup? So with the HSF-1, with it not being a progressive setup your going to 'feel' the meth kicking in?
I had originally planeed going with the HFS1 setup... as the HFS-5 just seemed really expensive & a bit more than I was wanting to pay.
HFS-5 - mirrrors the fuel flow
HFS-1 - all or none.
HFS-1 requires a tune if you don't want to "feel the kick" when it is triggered. Slowcar has been using the HFS-1 for nearly a year, his fuel map is pefect.
It is a simple upgrade from HFS-1 to HFS-5.
HFS-1 - all or none.
HFS-1 requires a tune if you don't want to "feel the kick" when it is triggered. Slowcar has been using the HFS-1 for nearly a year, his fuel map is pefect.
It is a simple upgrade from HFS-1 to HFS-5.
Last edited by Richard L; Jan 30, 2008 at 11:58 AM.
If you flowing a great deal of meth, as Slow car does; When the HFS-1 cuts in, it delievers a great deal of meths. If you don't trim your fuel down, you ewill get a stumble. This applieds to " meths" flow over 500cc/min at a relatively early onset spray point.
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I'm gonna bump this thread because I'm still wondering which is the better kit for my needs. I'm willing to pay the extra money yet my tuner (Sean Ivey) along with Big Al from Dynoflash believe that the HFS-1 is the better way to go. And since I'm willing to pay the extra I don't want to find myself wishing I got the HFS-5 instead of the HFS-1. Is it easier to tune? Which is better for a 35r setup? Progressive would seem to be the better way to go so I can effectively decrease lag. Am I wrong in thinking this?
I will make life easy for those who don't have time to ready the stickers
(indepth..) so I have simply it to a few paragraphs.
(indepth..) so I have simply it to a few paragraphs.
HFS-1, a non-progressive or fixed rate system is more suitable for standard
stock car applications where most power is developed in the mid-range.
Due to the mid-range power band, where most of the stress and knock
occurs. The fixed rate system is most suitable because it delivers most flow
in this area, suppressing the onset of knock and provides maximum
incylinder cooling. As RPM increases, the water/alcohol to fuel ratio
decreses. It fits well because the requirement for water/methanol is less.
The HFS-5 is more suitable for engine with larger turbo. Bigger turbo tends to
spool-up slower but will extend the power band further.
In order to assist faster spool-up time, ignition timing should be added but
with caution. The HFS-5 can be set to start spraying at very low boost to
assist knock suppression, so that advanced timing can be dialled in.
As RPM increase, power and torque "production" begins to demand better fuel
quality so that MBT (maximum best timing) can be achieved. This is when
the HFS-5 system really shines. It mirrors the water/methanol fuel flow all
the way to the top without hesitation. The fuel quality is consistent
throughout from low boost to high boost and low RPM to high RPM. The
useful dynamic range of the HFS-5 is huge.
You can confim this by triggering the system from idle (MPS mode), you will
not notice any bogging or hesitation. The advantages of the HFS-5 is not
often well understood.
I like to clearify, a PPS (progressive pump speed) system, with a dynamic
flow range of 70% or so, should or can never be compared to the HFS-5's
delievery algrorithm. A dynamic range in excess of 1000% is normal.
HFS-1 and HFS-5 in a nut shell. HFS-1 to HFS-5 ungrade is very easy and painless.
Which system are you going to go with?
Personally I run an HFS-5 even though I have a stock turbo. But thats because I like experimenting with different setups and I don't mind taking the time to tune it all. I like the dynamic adaptability that you can have with an HFS-5 system, with multiple trigger inputs and the precision of an HSV system.
With that being said, I think most users looking for simple HP increase would be better of with the HFS-1. When it comes down to it, the average user won't make more HP from the HFS-5 then they would from the HFS-1
Personally I run an HFS-5 even though I have a stock turbo. But thats because I like experimenting with different setups and I don't mind taking the time to tune it all. I like the dynamic adaptability that you can have with an HFS-5 system, with multiple trigger inputs and the precision of an HSV system.
With that being said, I think most users looking for simple HP increase would be better of with the HFS-1. When it comes down to it, the average user won't make more HP from the HFS-5 then they would from the HFS-1
It is import to ask questions, however basic or complex. Do not be blinded by slick marketing ploy. Keep asking until you get the answers. It is the job of a seller to find the best way to deliver the answer meaningfully and accurately.
I will make life easy for those who don't have time to ready the stickers
(indepth..) so I have simply it to a few paragraphs.
HFS-1, a non-progressive or fixed rate system is more suitable for standard
stock car applications where most power is developed in the mid-range.
Due to the mid-range power band, where most of the stress and knock
occurs. The fixed rate system is most suitable because it delivers most flow
in this area, suppressing the onset of knock and provides maximum
incylinder cooling. As RPM increases, the water/alcohol to fuel ratio
decreses. It fits well because the requirement for water/methanol is less.
occurs. The fixed rate system is most suitable because it delivers most flow
in this area, suppressing the onset of knock and provides maximum
incylinder cooling. As RPM increases, the water/alcohol to fuel ratio
decreses. It fits well because the requirement for water/methanol is less.
The HFS-5 is more suitable for engine with larger turbo. Bigger turbo tends to
spool-up slower but will extend the power band further.
spool-up slower but will extend the power band further.
In order to assist faster spool-up time, ignition timing should be added but
with caution. The HFS-5 can be set to start spraying at very low boost to
assist knock suppression, so that advanced timing can be dialled in.
with caution. The HFS-5 can be set to start spraying at very low boost to
assist knock suppression, so that advanced timing can be dialled in.
As RPM increase, power and torque "production" begins to demand better fuel
quality so that MBT (maximum best timing) can be achieved. This is when
the HFS-5 system really shines. It mirrors the water/methanol fuel flow all
the way to the top without hesitation. The fuel quality is consistent
throughout from low boost to high boost and low RPM to high RPM. The
useful dynamic range of the HFS-5 is huge.
quality so that MBT (maximum best timing) can be achieved. This is when
the HFS-5 system really shines. It mirrors the water/methanol fuel flow all
the way to the top without hesitation. The fuel quality is consistent
throughout from low boost to high boost and low RPM to high RPM. The
useful dynamic range of the HFS-5 is huge.
You can confim this by triggering the system from idle (MPS mode), you will
not notice any bogging or hesitation. The advantages of the HFS-5 is not
often well understood.
not notice any bogging or hesitation. The advantages of the HFS-5 is not
often well understood.
I like to clearify, a PPS (progressive pump speed) system, with a dynamic
flow range of 70% or so, should or can never be compared to the HFS-5's
delievery algrorithm. A dynamic range in excess of 1000% is normal.
flow range of 70% or so, should or can never be compared to the HFS-5's
delievery algrorithm. A dynamic range in excess of 1000% is normal.
HFS-1 and HFS-5 in a nut shell. HFS-1 to HFS-5 ungrade is very easy and painless.
