Re: HFS-4 intro, application for your engine...
 

Is the physical setup with the HSF-4 the same as the HSF-3 say in my 2001 audi s4?

Re: HFS-4 intro, application for your engine...
 

yes it is.

What do you have in mind on how the system is set up?

Re: HFS-4 intro, application for your engine...
 

That's all I needed to know. Thanks.

Re: HFS-4 intro, application for your engine...
 

In that case, setting the system up is a lot easier.

There are two options on the filter front.
1. We manufacture a high pressure 130 micron inline filter (Picture below)

2. It is poossible to supply a jets with a 25micro internal filter. But it is only available on a 0.3mm jet. flowing about 100cc/min. We can put the same filter in a larger jet but the filter and clog up within a few months unless you put another 30 micron between the tank and pump. (pictiure below 2/3)

3. The HFS-4 comes with an in-tank 112 micron filter (picture 4/5)

http://www.aquamist.co.uk/NEW/HP-filter.jpg

http://www.aquamist.co.uk/forum/newjet.JPG

http://www.aquamist.co.uk/sl/plist/p...7/filter-s.jpg

http://www.aquamist.co.uk/forum/filter.jpg

http://www.aquamist.co.uk/forum/09-tank-adaptor.gif

Re: HFS-4 Q&A, application for your engine...
 

I think I will stick to pre-pump filters most likely the intank that comes with the HFS-4 and then an additional 30 micron.

Also can you comment on Since there is no flow data for the injectors I will be using (rs4) how can I calculate nozzle size?

Thanks again!

Re: HFS-4 Q&A, application for your engine...
 

If you don't have any dtat of the flow capacity of the fuel injector, estimating the flow by power. I normally work on 500cc per 100bhp and 450cc/100bhp for di engines.

Re: HFS-4 intro, application for your engine...
 

Thanks Richard.

How easy is it to fit to the R56 and are there any generic instructions etc for newbies like me to try and get this fitted.

I have read the one thread about the HFS-3 install and believe there were issues with jet size. Would I get correct jet size supplied if I advised what car it is going in when ordering?

And lastly, due to the carbon build up and high IAT's on the R56 turbo mini I am hoping such install would alleviate this. Would I be correct in thinking that fitment would then need that the usual pre-requiistes for the mini like a better FMIC and OCC fitment would no longer be necessary with an aquamist install or would they compliment such an install?

Sorry for all the questions !!!

Re: HFS-4 intro, application for your engine...
 

Carbon issue is common on all di application. It looks like the Di gasoline is become a diesel soon, inheriting the carbon problem.

The HFS-4 has two extra inputs dedicated for the di engines. Monitoring fuel rail pressure and manifold pressure.

Re: HFS-4 intro, application for your engine...
 

Post timing clashed, will reply as soon as I can. It requires more than two lines.

Re: HFS-4 Q&A, application for your engine...
 

Thanks Richard.

Look forward to your response as I believe there are a few Mini owners already jumping on this and have posted a link to here on a couple of the mini forums for wider exposure.

Re: HFS-4 Q&A, application for your engine...
 

Would this be a good option for the R53 Cooper S MINI? Or is the HFS-3 better suited? Obviously at the GB price, the HFS-4 works out better value.

Re: HFS-4 Q&A, application for your engine...
 

The H4 can do everything the H3 does plus more. During the gB period, it is a better choice.

Re: HFS-4 intro, application for your engine...
 

We have a 35 or so page instruction manual which makes the install relativley easy. We had a GB for the tanks on a MINI forum here a while back and most found it not too difficult. Usually the jet is tapped in the up pipe from the IC so you will still get a coating of oil in the IC. It should help the carbon buildup in the intake valve area. The IAT issue is addressed well, but depends on the fluid used.

I will talk with Richard about jetting. He might not be able to swap jets in the GB kits, but I will inquire. Usually that work is done here when the unit is shipped as a system.

Re: HFS-4 Q&A, application for your engine...
 

Thanks Jeff.

So guess I should be able to fit the HS-4 myself if I follow the 35 page guide and take my time.

Also looks like I should still fit the OCC so that I make sure any oil vapour is still collected and run the FMIC I haven't fitted yet to keep things working with air for lower IAT's when the Aquamist is not engaged.

If you can still PM me the dimensions (unless on your site) of the mini tank I will check it still fits around my false floor housing amps.

Re: HFS-4 Q&A, application for your engine...
 

You would need 10mm from the centerline of the vertical cargo ring towards the center of the car to clear the unit side to side. Form the vertical center of the ring about 35-40mm to the trunk floor, pretty close to the carpet.

Re: HFS-4 intro, application for your engine...
 

So what size jets come with the kit? I couldn't find that info anywhere.

Re: HFS-4 Q&A, application for your engine...
 

I have just posted an update of the HFS-4... "what is in the box". See Post#2
http://www.aquamist.co.uk/vbulletin/...76&postcount=2

Re: HFS-4 intro, application for your engine...
 

Let us know I am interested in swapping jets out as well

Re: HFS-4 Q&A, application for your engine...
 

I can't find this info. where can i find whats in the box?

Re: HFS-4 Q&A, application for your engine...
 

It is the second post on this thread - stupid me for not mentioning that!

http://www.aquamist.co.uk/vbulletin/...76&postcount=2

Re: HFS-4 intro, application for your engine...
 

The system comes with three jets: 0.8, 0.9 and 1mm and a tee-piece. It should cover all operating range (350cc/min to 900+cc/min) from a single 0.8mm to 0.9mm +1mm. We can always pack and label them before leaving the factory.

http://www.aquamist.co.uk/HFS4/jetrate+M.gif

Re: HFS-4 Q&A, application for your engine...
 

I'm new to this, but from what I've read on MINI forums, .6mm and .7mm jets seem to be the most common ones used. I'm still trying to figure out how the system works... so can I adjust the pressure (looking at your graph) for a larger nozzle so that it has the same flow as a smaller nozzle, or is the pressure regulated in such a way that I need to order more nozzles?

Re: HFS-4 Q&A, application for your engine...
 

It is always better to have a smaller nozzle than reduce the pump pressure for running a larger nozzle.

GB are shipped form Aquamist or Howerton. Either of us can swap the jets over before despatch as long as you request it.

Re: HFS-4 Q&A, application for your engine...
 

I plan on running direct port so I need 4 nozzles the same size how can I arrange this since I wont need a tee-piece and would like the 1-4 port instead

Re: HFS-4 Q&A, application for your engine...
 

Well there we go :D I would like which ever jets come with the Howerton R56 kit.

Re: HFS-4 Q&A, application for your engine...
 

You can order the DP components from Howerton as you are USA. I am sure something can be worked out.

Re: HFS-4 Q&A, application for your engine...
 

There is one other useful addition unique to the HFS-4. It monitors the rail pressure pf the HSFP full time so that it compensate the meth flow between idle, cruise and full load.

Re: HFS-4 Q&A, application for your engine...
 

Man, the more I read about this new kit the happier I am that I dind't have the money to buy one sooner, or else I would have gotten the HFS-3 and been bummed out when this one came out. :D

Re: HFS-4 Q&A, application for your engine...
 

Can we talk about this cooling fan for a minute. I was looking at install instructions and check out wiring diagrams and what not, and can't figure out where it hooks up. Is it just a PC fan?

Re: HFS-4 Q&A, application for your engine...
 

Do you have the wiring instructions for the Cobalt SS/TC?

Re: HFS-4 Q&A, application for your engine...
 

Is the cobalt a diirect injection engine?

If it isn't, you only need to tap one wire into the fuel injector (-). Very simple wiring job. If you have a colblt ECU pin out diagram, I can make a special diagram for you.

Re: HFS-4 Q&A, application for your engine...
 

Question:

I have a stage 3 2001 (C5) A6 2.7T, I am currently running a vast w/m setup. Is the setup of the HFS-4 the same. What all do I ? What injector size is recommended? Do I need 2 nozzles or 6 for direct injection? How does this work with nitrous?

http://desmond.imageshack.us/Himg65/...jpg&res=medium

Re: HFS-4 Q&A, application for your engine...
 

The Cobalt is a direct injection engine.

Here is the ECM diagram: http://www.reachingoutministries.com/temp/LNF.html

Re: HFS-4 Q&A, application for your engine...
 

I believe the Vast w/m setup is a progressive pump speed system (PPS) and based on boost?

The HFS-4 is PWM-valve system (same as fuel injection), based on fuel flow and manifold pressure. You can use two nozzles (simplier) or 6-nozzles direct injection (complicated).

Questions:
1. What is the fuel injector size
2. Is your nitrous a dry or a wet type.

Once I have these answers, I can advise nozzle size.

Re: HFS-4 Q&A, application for your engine...
 

1. #52 injectors
2. Not purchased yet, will be a wet setup though.. 50-100 shot

Re: HFS-4 Q&A, application for your engine...
 

This is great help.

The HFS-4 has a dedicated input for Di injectors. Just wire the red and green wire of the green harness to anyone of the DI injectors. If the ECU is easily accessible, you can wire them there.

Do you have a back view of the ECU?

Re: HFS-4 Q&A, application for your engine...
 

Thank you funatnight for posting that info. I am looking at getting an SS/TC when I get back the states, and wanted to use the HFS-4. Didn't know where to find a pinout, so I didn't post.

Re: HFS-4 Q&A, application for your engine...
 

I do not have a back view. Let me hunt it down and take a picture tonight. For some reason the Cobalt community has not taken advantage of injection very much at this point. I am thinking that this car would really benefit from it though.

Re: HFS-4 Q&A, application for your engine...
 

I normally make a drawing showing the backview of the ECU. This way, people cannot make a mistake.

It will be great with you can take a picture of the ECU pin out. plase go for a hi-resolution wioth flash so that I can see the pin allocation moulded on the connector. My email is [richard@aquamist.co.uk).

Is modification such as wmi popular in the Cobolt community?

Re: HFS-4 Q&A, application for your engine...
 

I am going to be setting this up on a 1.9 litre M44 BMW engine with stock internals and compression with a Downing Atlanta Supercharger running approx 10-11Psi Max boost. It will have a custom ECM tune configured to run 93 (USA) octane petrol through a set of 42Lb/hour injectors and flowing through a 3" MAF. The tune will not depend on the water/meth for safety so I can run without the Aquamist running without danger, but I want to add the water/meth to lower operating temps in the supercharger and to add the extra safety factor of increased effective octane of the water/meth. I know there will be a performance increase running the Aquamist as the cooling effect and increased volumetric efficency.

I am curios as to where best place the injectors, I am leaning towards pre-supercharger but wonder if pre throttle body or past is best and if maybe the injector should be placed very close to the supercharger as I can get a nozzle to spray directly at the end of the rotors in this setup. Any suggestions?

I am also curious as to the proper size for the nozzles? The basic system should put out around 210HP at the rear wheel and about 250-270 at the crank and I want to have a system that adds that safety margin and power and also shooting for any possible improvement in fuel economy as well in conjunction with dropping from a 3.46 to a 3.25 rear gear.

Who do I talk to about tanks? I am wanting to get two 4qt tanks with one setup as a surge tank with baffle and the other as the primary, just like Howerton uses in the twin tank system, just without the enclosure as I will be custom building an enclosure and a pump mount to suit my boot.

Thanks,
Dave Ellsworth

Now to go and put my name down for the group buy.