HFS-3 not spraying ::mystery solved::

[Richard L]

Thanks for the update.

I am glad it all worked out. Most of the time is getting to know the system. If in doublt, always revert back to factory default by outting all trimmers to 12 o'clock and jumper link to the dotted slot.

This also helps me to diagnose the system knowing the settings are factory standard.

Always leave the failsafe until everything is set up otherwise it can be very confusing. You can now narrow up the WL and WH.

When did the snow and ice disappear? we have had a near-summer temperatures a week ago or two ago. Now is back to the normal cold and wet.

[Arthurwiljami]

OK lets not jumping just yet. Went today to take some logs and it was hitting the failsafe...again. It starts spraying ~3600rpm (first flow bar lits) where I see ~20psi and looking from the logs the failsafe activates @4000rpm and dorps duty cycles to 0%.

The weird part is if I start 3rd gear pull from ~2600rpm or below the failsafe comes on but if I start the pull from 3000rpm or higger it works great all the way up to redline. I'm going to turn the threshold again from 10 to 11 klock and see what happens but why the system is acting like this. is it still activating too soon if looking at the boost/rpm when it start spraying.

Still have snow here but the bigger highwas have been clear maybe a month although a week ago we had 10cm of snow in one day. I have taken slowly with the car because the winter stud tires isn't liking the 0.55G accelerations and 150kmh speeds

[Arthurwiljami]

Updates: Turned the threshold from 10-11 o'clock and now its not hitting failsafe when doing low rpm pulls.

[Richard L]

This threhold is about 30% IDC, at which the system starts to spray. This is quite a common starting point. A lower, you will be spraying below medium load.

I can help you to lowest the WL setting further, but I donlt thing it is necessary.

[sniper]

Originally Posted by Richard L

This threhold is about 30% IDC, at which the system starts to spray. This is quite a common starting point. A lower, you will be spraying below medium load.

I can help you to lowest the WL setting further, but I donlt thing it is necessary.

How can implement it?

[Richard L]

Post the information below:

THRES:
GAIN:
WL:
SC:
WH:
Jet size:

[sniper]

Hello Richard

THRES: 10.00
GAIN: 12.00 default
FS-DL: 12.00 default
WL: 08.00 off
SC: 14.00
WH: 17.00 off
Jet size: 0.4/0.6
Jumper link: default
HFS-4 flow sensor map: solder link default

additions
honda k24a turbo
fuel injectors :FIC Bosch 1000сс 12om
version: HFS4-V3.1

test
IDC pre-amplifier gain:
x1.0 : not work/failsafe activated/THRES: 12.00/ "B"flash
x1.5 : not work/failsafe activated/THRES: 12.00/ "B"flash
x2.5 : work/failsafe activated/ Bargraph 7bar/THRES: 12.00/ "B"lights
x2.75: work/Bargraph 7bar/THRES: 12.00/ "B"lights
x2.75: not work/failsafe activated/THRES: 10.00/ "B"flash

[Richard L]

Thanks for the concise infos. They all look good.

Please solder link 1 & 2 of the flow sensor map. Your totoal flow is quite low. It is located on the underside of the circuit board.

[sniper]

command accepted

[sniper]

Richard, I have 2 news for you: good and bad.

I have ruined the path of the first channel. Frankly speaking I don’t even understand how it happened. The path just got unglued from the board and remained on the copper bit. I repaired the path using the wire and I now understand why there are flow jumpers on the board.

test
IDC pre-amplifier gain:
x1.0 : not work/nothing is happening
x1.5 : not work/failsafe activated/THRES: 12.00/ "B"flash
x2.5 : work/Bargraph 7bar/THRES: 11.00/ "B"lights
x2.75: work/Bargraph 7bar/THRES: 10.00/ "B"lights
x2.75: not work/failsafe activated/THRES: 09.00/ "B"flash

final setting
THRES: 11.00
GAIN: 12.00 default
FS-DL: 12.00 default
WL: 10.00
SC: 13.00
WH: 14.00
Jet size: 0.4/0.6
Jumper link: default
HFS-4 flow sensor map: solder link 1-2
IDC pre-amplifier gain: x2.5