Think this might be me you were talking about Teph. Sorry it took me so long to find this thread, christmas has me very busy. I'm about to go do some ICS wiring testing at the ECU and switch to confirm full operations. Is the Auto switch a latching switch? Meaning, you hit it once and it holds a connection to ground, hit it again and it disconnects the connection (or switches to 12V+)?

Also, does this map switching technique completely mimic the map switching the stock ECU does when it switched to low octane maps to prevent engine damage, meaning it is that instant and happens during any driving condition which warrants the need to protect the engine?

I have PLENTY of alky injection failsafes that can trigger this SINGLE wire whenever there is a problem, just need to know how the ECU "see's" the signal from the ICS switch so I can have my circuit mimic it on its own when it sees the problem, and switch back when the problem is gone. Be back with info soon.

 

A couple of other things I noticed.

Any time the ICS is in auto, the Valet mode switching (via the TPS) doesnt work.

When your on the alt map with ICS in auto then try to switch the valet mode, it goes back to the standard map.

Did anyone else test these sequences? Maybe Im speaking too soon and 4.2 will fix this as well.

 

Just a quick answer to AutoXer - this was the original method of switching maps (before I put in "hold AutoICS" basically:
- car off
- ign on
- auto ics on (so ICS lamp is ON)
- hold TPS > 90% for altmap and < 90% but greater than 25% for normal maps
- turn of autoics whilst still holding the TPS

I have left that code in, because I think for NonICS equipped evo's it might still be used!

 

"A little while" isn't a very technical term. That is, unless you predefine it... like this...

A little while = 1 sec;


Will the CEL still flash(rapidly) when you turn the ignition ON?

 

guys ive updated 94170008 to v4.2 - can someone test it?

the CEL shouldn't flash for more than 60seconds (or whatever you set it to)
also the Spray shouldnt spray at all...

hopefully!

edit - a little while, yeah I dont know how long, I usually do it for like 10 seconds... basically if you take turn the IGN OFF and then ON again the ECU remembers where its "upto" in the code, and so my "first time init" stuff doesnt get run.

taking the key out for a "little while" basically resets the ECU code position...

kinda

 

Tested the wires at the ICS switch.

Green/White - (+)12v for light INSIDE the actual ICS switch (activated when parking lights/headlights are turned on)

Black/Yellow - (-) Ground for light in switch



Blue - Manual trigger wire for ICS relay (connect this wire to (-) ground to activate ICS relay) only requires 3mA of current

Blue/White - Auto ICS wire (momentarily give this wire (-) ground once to turn on AUTO mode, must release and connect to (-) ground again to turn off AUTO mode) only requires 3mA of current

Black - (-) ground source for the MANUAL and AUTO triggers


Tephra, in the ROM code, is there a way to change the AUTO ICS trigger from momentary ground switching to:

ON = connected to (-) ground
OFF = no connection to (-) ground

I don't know how this setting is written in the code since I'm still a HUGE rookie at the disassembly process.

 

the parking lamp is different to the ICS lamp...

 

Should be fairly easy to implement the failsafe with this, right? The failsafe trigger wire just has to ground the ICS Blue/White wire and it will cause it to switch maps. However, unless there is some other way, the ICS switch would have to be manually pushed after the failsafe has deactivated to re-enable the primary maps.

 

This would be even better.

Sorry for the 2 posts, I saw the original post before you edited it.

 

Also, my car already has a MBC when I bought it used but I want to know how the stock boost solenoid works. If you have no power to the solenoid, does it allow ALL boost pressure to reach the wastegate? When powered up, can you hook it up to completely cut off all boost from passing thru it (100% IDC I imagine) and can it handle being on constantly? Not the best thread for this but it pertains to some of the failsafes you guys with MBC's would really like to have with this map switching.

 

Just uploaded 94170015, might as well get this one into testing as well

With regards to MBC's I suspect that most ppl would/should be switching back to MrFreds direct boost control using the stock BCS??

 

Also can we move the failsafe discussion to a new thread? otherwise this will fill up real quick Jamie do you want to make it?

 

I know, this is the light INSIDE the actual switch which comes on when the parking lights or headlights are on.

 

Basically all you need is a MAC valve to allow all boost pressure to bypass the MBC and hit the wastegate. It would be cool to use all the stock hardware though.

 

I actually made one of these a while ago. I think we discussed what we are talking about the exact same things in this thread. If you want I can dig it up.