When you "write to ECU" you are loading the current map up to the AFC. For example. You start up the R4 software and go file -> load -> supermap. Now the supermap is loaded in the R4 software and here is where you would make changes if necessary. With the map loaded, connect to the ECU - you're computer is now connected to the AFC module in your car (it IS NOT connected to your ECU). Now you have two options: read from ECU and write to ECU. Read from ECU does just that - it reads the current map loaded into the AFC and displays it in the R4 software. I rarely ever do this because if you have a new map loaded in the R4 program this will overwrite everything. The other option, write to ECU is what you want to use. This function loads whatever you have entered into map A (V1 and V2) and map B (V3 only) to the AFC module. Once this is done you have now "loaded" a new map to the AFC and whatever changes you made will be experienced while driving.
AFC-SplitSecond PSC1 Map Library
- Thread starter lcruz64
- Start date
Metallic36
Member
- :
- 2003 Mazda6 3.0L Speed Yellow
I don't have the "Load" option in my File menu.
New customer
Open customer
Close Customer
Compact Database
Print
Exit
I clicked on "Compact Database" which allowed me to "open" a file, but nothing happened when I selected the file from the browse box and clicked "open."
I went to the Maps, and it still shows the one that I pulled from the AFC loaded, so I don't know how to tell if the map I "opened" is going to be the one written to the ECU. I don't want to "write to ECU" and not have a map on it at all.
New customer
Open customer
Close Customer
Compact Database
Exit
I clicked on "Compact Database" which allowed me to "open" a file, but nothing happened when I selected the file from the browse box and clicked "open."
I went to the Maps, and it still shows the one that I pulled from the AFC loaded, so I don't know how to tell if the map I "opened" is going to be the one written to the ECU. I don't want to "write to ECU" and not have a map on it at all.
Metallic36
Member
- :
- 2003 Mazda6 3.0L Speed Yellow
Crap.. okay thanks!! 
I was trying to load the map while in my own "Customer" thing.
I was trying to load the map while in my own "Customer" thing.mzspeed14.0
Member
- :
- 2003.5 Mazdaspeed Protege
hi, i was wondering if theres a map out there me?
CAI, hard pipes, custom msp smic, flashed ECU, and an exhaust cut-out
any help is much appreciated! (cheers)
CAI, hard pipes, custom msp smic, flashed ECU, and an exhaust cut-out
any help is much appreciated! (cheers)
The map is not the problem, one of your settings is incorrect under either system or outputs. I can't remember which setting, though. However, why don't you download the supermap on the first page/first post of this thread and load it, it should be good.
Ya, non of the current 440cc maps alter the out of boost tables, so the ecu has to compensate a great amount.
The supermap will be fine.
FYI, this has been discussed many times throughout this thread. You guys need to read read and read if you want to know more.
Take care.
+1 There's so much information in this thread. Also, there is no perfect, pre-made map for your mods! Every car is slightly different and most people have slightly different mods so it is unlikely that anyone else's map is perfect for you. Just start with the supermap and work from there. That's the best, and safest way.
If over pressure signals when the afc will take over,
If your cell values on the your map start changing at 2psi for an example, would you set over pressure to 2 activating the programm?
Also, im starting to get this tuning process and have read quite a bit, however im still not getting there settings
I attached what im looking at...
If your cell values on the your map start changing at 2psi for an example, would you set over pressure to 2 activating the programm?
Also, im starting to get this tuning process and have read quite a bit, however im still not getting there settings
I attached what im looking at...
Attachments
I believe the Over pressure setting is one point behind of the map. If you set it to 2, the AFC will start altering the map at 3psi.
I'd be interested as I still have my P5 ECU lying around somewhere. The 440s are an absolute must for the P5 sedan as you'll start maxxing out the MAF voltage to the ECU around 8 psi. The timing outside of boost should be nice though.
im going to assume then that noone knows that those outputs mean..because that didnt even come close to answering my question lol what are the values what do they mean?
