Does anyone know what the exact load value is that the ECU triggers the high voltage fuel pump relay at? I'm working on a alky injection setup and I need to find a way to trigger the system with a load controlled output if its possible. If the load value was high enough, I would just tap off of the high-voltage fuel pump relay wire.

If Tephra of MrFred (or any other other ECU disassemblers) can find a way to find this parameter in the ecu that would rock.

Better yet! Find a way to create a seperate load adjustable output trigger using something that can be replaced from the ECU pinouts.

How about the intercooler sprayer output and parameters maybe??? That has to be triggered by a load value already anyways? I'd just need it to stay on whenever the ignition is on. I know there are IC relay controls in the ECUFlash "Misc" section and I assume that is for the intercooler sprayer triggers???

 

Reading thru this currently

https://www.evolutionm.net/forums/sh...cooler+sprayer

I also noticed there are 3 pnouts that are for the IC sprayer that could be used, pins 35,43, and 57.

 

So I got the IC relay settings to actually trigger the IC sprayers when I wanted with the car parked.

IC relay timer ON mode switch time
I assume this is the delay setting from the time AUTO is set, til the auto mode actually activates?

IC relay timer control RPM
It won't spray below this RPM setting, I set it to 500rpm for testing


IC relay timer control water temp
Water temp which must be exceeded before sprayer will activate. I set them both to 10* celsius for testing

IC relay control vehicle speed
This is the speed at which te sprayers no longer activate. I think the logic is after a certain wind speed, the water passes by so fast that it has no effect, you just waste it.

IC relay control EV:
this is the load setting. I set it to 0% and when auto mode is on, just tapping the gas pedal triggers the sprayer.

IC relay timer time
How long the sprayer stays "on" and how long it stays "off". It doesn't keep the sprayer on the entire time you have it floored, it switches on and off and on and off, etc...

IC relay timer control judgement
Hi and Lo voltage settings. NO friggin clue.

IC relay timer Air Temp
Must be higher than this temp to trigger sprayer. I set it to 10*celsius for testing




My 3 questions:
How do I change the scaling in the "IC relay control EV" so its the actual load value in the timing and fuel charts. I want to use that value to trigger the alky kit so I can just adjust and load cells above that value since I KNOW the alky will be spraying above that level.

Can you edit the map definition for the "IC relay timer time" so it stays on constantly if the sprayer output is activated? If I set the ON setting to its max setting of 25.5 will it keep it on constantly and just keep the OFF setting at 0? I know its set to not be constantly on to protect the sprayer motor but i obviously want to use the trigger wire for the alky it, not the sprayer motor at all

Who can create an "Alky Trigger ON/OFF" option so it doesn't need to be activated with the switch and can be set to be on whenever the car is on?

 

A load and rpm based 0 - 12 vdc output (ultimately, will likely start as 5 -0vdc) would be what we need for perfect knock control with W/M.

The IDC systems are very accurate but knock chemistry isn't IDC dependant, it's torque dependant. The MAF based systems are more load dependant than IDC but suck for accuracy. A load based methanol system would be perfect, but about all we can do is wait for or convince tephra in fitting a methanol system on his FQ and motivate him with encouraging donations.

 

I have built a alky setup that runs off of the injector IPW and for the most part will replace about 30% of the fuel volume above a set load value (say 150 load) with an ethanol mix. I just dont want the basic 'boost switch' activation so I am figuring out how to make this IC sprayer output useful for me. Ultimately, a disassembler will have to dig deep and find the addresses I will need and alter its characteristics to do what I am asking it to do.

Here is my alky setup:

https://www.evolutionm.net/forums/sh...d.php?t=306944

 

My load trigger is address 2488 and I'm sure it has multiple variables are all involved in triggering the sprayer from this address. Damn it, I need to learn to disassemble! Someone give me a free activation code for IDA Pro,lol.