Radiator Fan modes for 2006 sti?

prodrive · **Joined:** Tue May 15, 2007 2:41 pm **Posts:** 17

Hi,

there is radiotor fan modes support from 2002 to 2005 but not for 2006 sti. will it be in future definitions? As an idea, by scaling the coolant temp sensor, can we provide radiator fans to open earlier than 96 degrees?

merchgod · **Joined:** Wed Mar 29, 2006 10:38 pm **Posts:** 4224

I've briefly messed with trying to determine the radiator fan thresholds for the 32-bit ECU, but it is a PITA. I'll figure it out down the road, I'm sure. I would not rescale ECT.

prodrive · **Joined:** Tue May 15, 2007 2:41 pm **Posts:** 17

thanks merchgod. so the ecu uses stock opening and closing cooling temp for fans. isn't it? Also, sorry but what is PITA?

merchgod · **Joined:** Wed Mar 29, 2006 10:38 pm **Posts:** 4224

prodrive wrote:

thanks merchgod. so the ecu uses stock opening and closing cooling temp for fans. isn't it? Also, sorry but what is PITA?

It won't likely be a simple as just a series of coolant temp thresholds (the 16-bit ECU isn't that simple either). The PITA part is just the way it is set up in the ROM that makes it pain to reverse-engineer. That means more time has to be spent on it and I haven't had a chance to do this (if it is were fairly straightforward, I would have added it to the defs already).

prodrive · **Joined:** Tue May 15, 2007 2:41 pm **Posts:** 17

prodrive wrote:

(if it is were fairly straightforward, I would have added it to the defs already).

You mean you will add in the near future? sorry for my noob style, here time is very late I am sleepy

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merchgod · **Joined:** Wed Mar 29, 2006 10:38 pm **Posts:** 4224

no, I'm saying if it was easy for me to determine, I would have added it already. I don't know when or if it will be added in the future. Probably eventually.

prodrive · **Joined:** Tue May 15, 2007 2:41 pm **Posts:** 17

Thanks. I see. I hope you find a more time in the future to determine these and many others.

merchgod · **Joined:** Wed Mar 29, 2006 10:38 pm **Posts:** 4224

Good news. I actually made progress with radiator fan thresholds for the 32-bit ECU. It will most likely make the next definition update (1-2 months), at least in debug mode.

prodrive · **Joined:** Tue May 15, 2007 2:41 pm **Posts:** 17

God bless you Merchgod

I am hopefully waiting next definition update. Debug mode means untested but changes can be made. Doesn't it?

merchgod · **Joined:** Wed Mar 29, 2006 10:38 pm **Posts:** 4224

prodrive wrote:

God bless you Merchgod

I am hopefully waiting next definition update. Debug mode means untested but changes can be made. Doesn't it?

Yes.

dynamix · **Posted:** Tue Mar 11, 2008 12:48 pm

have you tried running a cooler thermostat ?

(I guess you are trying to stop it overheating)

Zerosports one dropped the water temps down nicely for me (and oil temp too)

RomRaider

Radiator Fan modes for 2006 sti?

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