A8DH200Z - Auto IC Water Spray Control

racedynamix · **Posted:** Sun Nov 04, 2007 4:12 am

I know the JDM 06 imprezas have auto water spray facilities (amongst others) - is there any way to get this amended in my rom to allow me to fit a switch to the IC sprayer and have the system auto spray for me?

At present I have a manual IC sprayer button.

merchgod · **Joined:** Wed Mar 29, 2006 10:38 pm **Posts:** 5336

I'm not 100% positive, but I don't think that the 32-bit ECU is involved is controlling the IC spray as is some of the 16-bit ECUs. I'm guessing a separate module is involved.

racedynamix · **Posted:** Sun Nov 04, 2007 12:34 pm

hmm. I am sure I saw a 06 JDM STi hex with the IC tables in there, I will investigate further as it would be nice if this could be added to the std UK rom.

merchgod · **Joined:** Wed Mar 29, 2006 10:38 pm **Posts:** 5336

dynamix wrote:

hmm. I am sure I saw a 06 JDM STi hex with the IC tables in there, I will investigate further as it would be nice if this could be added to the std UK rom.

IC tables where? There are no IC tables defined in the RomRaider definitions other than for select 16-bit roms.

racedynamix · **Posted:** Sun Nov 04, 2007 1:07 pm

Yep - definitely in A4TJ121B JDM 05 STi but I believe that is 16bit

Autowash Threshold Boost
--"-- --"-- Coolant Temp

--"-- --"-- Engine Speed

--"-- --"-- Vehicle Speed

--"-- --"-- Air Intake Temp

merchgod · **Joined:** Wed Mar 29, 2006 10:38 pm **Posts:** 5336

Yes, that would be one of the select 16-bit roms. 'Intercooler auto-wash relay' is one of the potentially supported SSM switches that could be monitored (and is so on those select 16-bit ECUs). None of the 32-bit roms of vehicles that have IC spray that I've checked support logging of that switch. So, my assumption is that it is not handled by the 32-bit ECU.

testes1010 · **Posted:** Mon Nov 05, 2007 12:02 pm

dynamix wrote:

I know the JDM 06 imprezas have auto water spray facilities (amongst others) - is there any way to get this amended in my rom to allow me to fit a switch to the IC sprayer and have the system auto spray for me?

At present I have a manual IC sprayer button.

pickup a boost pressure switch from http://www.coolingmist.com ~$25

stlb5 · **Posted:** Mon Nov 05, 2007 1:03 pm

There's a how to post over on Nasioc for a boost controlled IC spray using the above mentioned switch. Should do just what you're looking for.

Mart · **Posted:** Mon Dec 07, 2009 9:55 am

Is it still true for 32-bits ECU to that day?

no switch available?

Mart

merchgod wrote:

Yes, that would be one of the select 16-bit roms. 'Intercooler auto-wash relay' is one of the potentially supported SSM switches that could be monitored (and is so on those select 16-bit ECUs). None of the 32-bit roms of vehicles that have IC spray that I've checked support logging of that switch. So, my assumption is that it is not handled by the 32-bit ECU.

ckibue · **Posted:** Tue Mar 28, 2017 1:36 am

Mart wrote:

Is it still true for 32-bits ECU to that day?

no switch available?

Mart

merchgod wrote:

Yes, that would be one of the select 16-bit roms. 'Intercooler auto-wash relay' is one of the potentially supported SSM switches that could be monitored (and is so on those select 16-bit ECUs). None of the 32-bit roms of vehicles that have IC spray that I've checked support logging of that switch. So, my assumption is that it is not handled by the 32-bit ECU.

To bring an old thread back to life, I have run a 32-bit AZ1G501K and AZ1G500Z rom on my 09 JDM Spec C STi and it does seem the ecu controls the auto intercooler water spray. I can also log intercooler auto washer switch and intercooler auto washer relay as parameter ids 62 and 65 respectively.

kingchett · **Posted:** Tue Mar 28, 2017 4:50 am

If you have water injection just piggy back off the pressure sensor switch to engage your Intercooler sprayer.

Intercooler sprayer does nothing IMHO so would not lose sleep over it, WMI has massive benefits but that's another topic..

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