A year on… Since the introduction of the HFS-5 idc water/methanol system we put its performance on record. With the aid of a real-time logged chart, you can see how the system went about achieving its designed goal, delivering methanol relative to fuel flow.
The flow sensor reading is represented by the yellow trace, where presentation is focused. Keeping things simple, we will just compare two curves at a time. HFS-5 is set to trigger at a very low duty cycle of 12%. This demonstrates how the flow responses to engine cycles between 2500rpm to 7000rpm and from vacuum to full boost. Really putting the HFS-5 through its paces.

http://www.aquamist.co.uk/forum/LTP-3s.png
(chart supplied by Dudical26 with thanks)

Reference to the chart above:
[1] As the IDC climbed above 12%, the HFS-5 begins delivering methanol at a steady rate (yellow trace at the left of circle1). The throttle snapped open as the yellow trace (methanol flow) entered the blue circled area. The methanol flow was affected by the partial manifold vacuum during the throttle movement. The flow sensor recorded this flow change event faithfully. Flow tracking resumed normally after this little interruption.
[2] Wastegate chatter was recorded accurately by the flow sensor. This section highlighted the response speed of the flow sensor’s ability to detect fast transients.
[3] If fuel flow is a good indication of engine power, then tracking IDC is a reliable method to keep methanol and fuel ratio constant. Compare the methanol flow (yellow trace) to the IDC (red trace), the HFS-5 performed this task with ease.

It has to be said, if the HFS-5 were to tracks manifold pressure instead of IDC, it could not possibly provide methanol/fuel ratio consistency to the entire power cycle. Just look at the fuel requirement (red trace) against boost pressure (bright green trace), beyond peak boost, they went in opposite directions!
The chart also highlighted the importance of the inclusion of a fast-response flow sensor to keep track of the flow for fault diagnostic purposes. From this moment on, failsafe is just a matter of monitoring the IDC against the actual flow.
A rock steady 125psi of water pressure is another contribution to the accuracy of methanol delivery. The HFS-5 is the closest thing working in parallel with the OE fuel delivery system.

Excellent info. I've been looking for data like this for about a week.

Greatly appreciated.

Looking good! HFS-5 has been on my list of parts for my upcoming build and wondering if I buy this in the near future, are you going to come out with an upgrade or something better the following month :lol:

The only upgrade I can think of is incorporating a "return to tank" RRPR so that the flow is not affect by manifold pressure. It will add more cost to an already expensive system.
At present, the flow variation can be trimmed out by up the jet size a little or play with the inline restrictor pill.

Looking good! HFS-5 has been on my list of parts for my upcoming build and wondering if I buy this in the near future, are you going to come out with an upgrade or something better the following month :lol:

This is alway a possibility to an upgrade to an existing system unless the next system uses a completely different concept to the HFS-5. I doubt it will ever happen. Fuel injection system advancement has peaked for a decade. The HFS-5 is comparable to the existing system.

Do you do any special deals direct for nasioc people?

I would love to do this but I can't.

The only time we can do this is during a new product launch. The last time was the launch of the HFS-1 (June 07) and HFS-5 (March 07). It is always possible for NASIOC members to organise their own GB and approach our US importer.

I have managed to offset the scale of flow sensor trace so that comparison is clear. The new trace matches the IDC (red trace) very closely during boost .

http://www.aquamist.co.uk/forum/offset.png

i'd be willing to organize the group buy for fellow nasioc members.

I hope you know what you are getting into, it is very involved work.

Richard,
yes, reminds of doing multiple orders from the same distributor.
just like if i was ordering several kits from Beatrice.
shipping, should not be an issue.
the time frame on the other hand is another issue.

I would execute this from jax, fla. and ship out to
the members from there.

payment would go through paypal.
I have paypal debit card to purchase from aquamist.

Ms. Beatrice has me listed as distributor still..:D

so all in all, just a matter of time for the offer prior to
ordering the kits.

Ben

Richard,
yes, reminds of doing multiple orders from the same distributor.
just like if i was ordering several kits from Beatrice.
shipping, should not be an issue.
the time frame on the other hand is another issue.

I would execute this from jax, fla. and ship out to
the members from there.

payment would go through paypal.
I have paypal debit card to purchase from aquamist.

Ms. Beatrice has me listed as distributor still..:D

so all in all, just a matter of time for the offer prior to
ordering the kits.

Ben


ben i would def be interested if this is going to go thru in the near future... but i dont have and wont sign up for paypal thou, can i just drop the payment off to ya, since i live 20 minutes away roughly?

I'd be interested in a group buy too.

I'd also be interested.

by the way..
got the nod from Aquamist.
group buy for Aquamist, any kits..
but we need 10 persons..to make it go..
pm me which kit you guys & gals desire..

PM'd

I'm in

So in a nutshell whats the diffrence between the


HFS-1
HFS-5


I was sold the HFS-1 and will be puttin down a little north of 400whp/wtq. Am I good to go or do I need a bigger nozzel?

how much is the hfs-5 in this group buy?

pm.. please...
and you will need a paypal account.

timeline..

place order by middle of July.

ship out to you guys end of July.

So in a nutshell whats the diffrence between the


HFS-1
HFS-5


I was sold the HFS-1 and will be puttin down a little north of 400whp/wtq. Am I good to go or do I need a bigger nozzel?


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.


http://www.aquamist.co.uk/forum/gallery/HFS-1/HFS-1w-ss.jpg

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.



http://www.aquamist.co.uk/forum/gallery/HFS/HFS5-idc-ss.jpg

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.

double posted

Putting aside performance gains. I wonder if the HFS-5 can be used as a secondary injection system, for the purpose of bumping up the octane rating of a 87 octane fuel.

An engine management will automatically add timing in absence of knock. Since the HFS-5 mirrors fuel flow through out the entire engine cycle, if it is triggered at 12% idc, one should benefit from better igintion timing and saving fuel grade cost.

You need of course factor in the cost of methanol. (water is free).

Just a thought.

Putting aside performance gains. I wonder if the HFS-5 can be used as a secondary injection system, for the purpose of bumping up the octane rating of a 87 octane fuel.

An engine management will automatically add timing in absence of knock. Since the HFS-5 mirrors fuel flow through out the entire engine cycle, if it is triggered at 12% idc, one should benefit from better igintion timing and saving fuel grade cost.

You need of course factor in the cost of methanol. (water is free).

Just a thought.

only cost effective way is if you already have the injection system. Plus you would burn through a lot of meth/water so you would at least need a 3+ gallon tank everyday i would think depending on your daily drive. Its still only 1.5 give or take gallons of meth a day so a 55 gallon drum will last a month. so $250 in methanol cost plus normal 87. Stock map should be able to handle it but its not very cost wise.

It will also depend on the afr when running methanol/water. Most methanol/water tunes around 11.5 to 12. I believe you need to run pretty rich with 87 octane.

If one runs M50:W50, you only need to consume half amount of methanol. I don't know what % of methanol/water you need to bump the octane to 92.

I need to contact some of the HFS-5 users to look at their mpg on their average trip computer since the installation, even they run 92. For teh time being everyone use the WAI for performance enhancement purpose. I doubt if anyone has use it for mpg improvement.

Methanol is very cheap compared to gasoline. The current world commondity price for methanol is $290 per tonne, around 91 cent per gallon. Buy from industrial supplier rather race fuel supplier. 99.95% pure is the same from any supplier.

Just a thought, gasoline being so expensive at the moment.