Having issues with HFS-6
 

Hi,
I have an 06 STI and recently had the HFS-6 system installed on my car (not by me). I purchased the system from someone else online (nasioc.com). They never used the system and all the parts were new and in the original packaging never opened. Well, I got my car tuned to use with meth injection of course. It was working fine at first but it now continually has the same issue. It works fine when running the car for a while or so. Then when I go back to turn the car on the flow control module in the engine bays starts making a clicking noise and the gauge flashes several bars once then continues the clicking noise until I disconnect the controller box. So I am assuming it sprays that one time on it's own then it continues the clicking noise. Then I mess around with the cables pushing disconnecting then pushing them in all the way until the module stops clicking. When the clikcing stops I am able to run the car and hit boost and then it sprays when it should. However, the clicking comes back and the bars flash and the clicking til I disconnect and mess around with the cables. I was told the issue is the control box by the installer. Any suggestions ?

Re: Having issues with HFS-6
 

It apperars to be contact problems. Se below

1. check the plastic partitions between on the RJ connectors. Damage during threading the connector through the fire wall or small orifices.

2. Make sure the latching tab is pointing around 40 degrees. Lift and bend back gently to restore its springyness.

3. Check for any dirt or grease in the RJ sockets.

Wipe clean all the plug contacts with alcohol. (not water),

Re: Having issues with HFS-6
 

I will try that..you think it may be the wiring ??..the flow control module vibrates or shakes when the engine gets hot it seems...and when I mess with the connectors on the control board sometimes it sprays on its own or the pump also starts making noise...here are some pics of the install..does everything look okay there ?? sometimes it works great with no problems and it sprays when it should...but half the time the flow control module shakes/vibrates with the water injection and S light as they should be but I don't want to try it when it does that and sometimes the bars flash and the B light flashes as well...plus the shaking is annoying and I mess with the connectors to try to get it to stop eventually it does but not after a while
http://i1201.photobucket.com/albums/...2123/mail1.jpg

http://i1201.photobucket.com/albums/...2123/mail4.jpg

http://i1201.photobucket.com/albums/...2123/mail2.jpg

http://i1201.photobucket.com/albums/...2123/mail3.jpg

Re: Having issues with HFS-6
 

Installation looks good.

The firewall is noty ther best place for the FCM:

1. Most engine heat is blowing towards it.
2. Can be quite noisy when the FCM starts to pulse.
3. The line to the jets can be quiet lengthy, hence some dribble during line depressurisation.

Please note the system is 100% tested from the factory. Good installation accounts for the other 50% of the end result.

Most of my time is spent on supporting the other half. 50% of the problems arise from the initial installation and the other 50% is tracking down system detorioration due to bad installations.

We always get 100% blame for the any system issues. Please bear this in mind that I am unable to inspect the quality of installation and can only guess from your information and help you as best I can.

Re: Having issues with HFS-6
 

Ok thanks, I am noticing a trend though. The system functions as normal during night time when it is cooler. It starts acting up during the day time. So the heat is affecting either the control board or the flow control module. Is the flow control module supposed to make a loud vibrating noise when the temp is hotter ??

Re: Having issues with HFS-6
 

The FCM should not sound any different in cold or hot conditions.

There is an electronic circuit board inside the FCM performing two tasks. It converts the raw flow sensor pulses for the HFS-6 and drives the inline valve within. The driver can be temperature sensitive. If you know how to solder, I can send you instruction how to bypass it. It is a five-minute job.

This will avoid the necessity to relocate the FCM. Some time in the future when the system behaves well, I can convert the controller to V3 if you return the controller back to me. I don't charge for doing this, but you have to pay the return shipping.

Re: Having issues with HFS-6
 

Sure, I can solder a little bit so if you could send me the instructions. This is a temperature related issues it seems. Runs normal during cooler times and starts acting up up when it is hotter outside.

Re: Having issues with HFS-6
 

Ok, I am starting to notice a pattern here. When I orient the control box a certain way the noise goes away. So that is strange that it would have to be oriented a certain way. So it looks like it is not a temp issue

Re: Having issues with HFS-6
 

Are you able to solder? You can convert the FCM to be driven from the H6 controller. This way, heat will not affect the driver inside the FCM box.

Re: Having issues with HFS-6
 

Yes, I am able to solder.

Re: Having issues with HFS-6
 

open up the FCM...

1. Pick out the brown wire from the 8-core cable
2. Cut it as closely as possible from the circuit board.
3. Cut the "non-red" wire off the solenoid valve pin. Tape it up.
4. Solder the brown wire to the same pin.
5. Now the valve is driven directly from the controller.

Re: Having issues with HFS-6
 

Hey Richard..so I connected the brown wire to the black wire in the FCM. It doesn't click anymore but I was wondering if anything was reset since my car was already tuned with the aquamist kit.

Re: Having issues with HFS-6
 

1) Can you send me a picture of the modifications. I like to check it.
2) Can you use the manual test "TST" and let me know if the valves actives. Make sure the INJ is linked.

Re: Having issues with HFS-6
 

here is a pic of the solder of the brown to black wire
http://i1201.photobucket.com/albums/...3/IMAG2859.jpg

Re: Having issues with HFS-6
 

Thank you for the picture. the modification is perfect.

Can you reassemble the FCM fully and do a manual "TST". With the "INJ" link on. You can disconnect the hose to the water jet so you can see the spray if there is working normally.

Re: Having issues with HFS-6
 

yes Richard it does spray..The water level led comes on when it sprays...It didn't affect the spraying but it does come on...I tried a couple of pulls and the same the water level comes on when it sprays..didn't affect anything though

Re: Having issues with HFS-6
 

The water level led is doubled up as failsafe activation. If you haven't yet set up the failsafe as described in the user manual, I will help you setting it.

Querstion...

What is the maximum number of bars displayed on the gauge at WOT?

Re: Having issues with HFS-6
 

It looked like it was 6 bars...not sure if the tuner set up the failsafe or not

Re: Having issues with HFS-6
 

When I filled up the tank all the way the water level led would stop flashing when it sprayed. Is it supposed to flash like that when the water level in the tank is lower ??

Re: Having issues with HFS-6
 

The led should not be flashing at all. Only the action of lever arm of the sensor moved by water near the empty period makes the led flash.

Re: Having issues with HFS-6
 

Im thinking it is working correctly...no more flashing of the water led

Re: Having issues with HFS-6
 

Thanks for your help Richard....So how does v1 differ from v3 ??

Re: Having issues with HFS-6
 

V3 has addressed the V1 's sensitive to supply fluctuation. Failsafe at initial start-up is much faster to set up.

When you return the unit for re-testing, please write: "return to manufacturer for warranty repair" or import tax will be imposed. Valve it no more than GBP10.