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Our ECUs can have eight sets of maps...

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Old Mar 17, 2007 | 11:27 AM
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Our ECUs can have eight sets of maps...

... and they have variable that allows us to switch between them that is always set to zero but I can sort that

With the memory access mod I've made to the MUT protocol we could switch between 8 sets of maps in either ROM or RAM depending on where you have space - on the Evo 9 - lots.

Presently the ECU only uses the first set.

We can have 8 sets of the following if we want them, but we don't need to have them all in each set:

Idle RPM in neutral
ISCV step in neutral with aircon off
Hi oct fuel
Lo oct fuel
Those three funny antilag tables
Boost limit
MAF pulse calibration
Hi oct ign 1-3
Lo oct ign 1-3
Fault codes that Bez has recently defined

The loggers are being updated to send our new read/write commands.

VVT and boost control tables have only one set, but I am sure we could change that.

There is a lot of potential with this, if you can find an input/output to trigger the map switching it can be done if we find the address for these pins.
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Old Mar 17, 2007 | 12:08 PM
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Originally Posted by jcsbanks
...
There is a lot of potential with this, if you can find an input/output to trigger the map switching it can be done if we find the address for these pins.
With safeinjection, low flow = lo oct maps and no blown engine

I just need to find the culprit of my knock, I get a count when I hit a pothole and almost always durring transition of closed to open loop
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Old Mar 17, 2007 | 01:36 PM
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Originally Posted by jcsbanks
... and they have variable that allows us to switch between them that is always set to zero but I can sort that ...
Excellent work, and thanks for all you do!

Does this apply to the VIII as well?
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Old Mar 17, 2007 | 01:42 PM
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Ok you have me drooling now it shouldn't be to hard to find an unused i/o circuit in the 8 and 9 ecus. from what I am understanding that would allow push button map switching
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Old Mar 17, 2007 | 01:55 PM
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how about pin 88 for the uk evo9s which is the usdm only clutch pedal position switch and pins 66 or 67 on the usdm evo 9s which are (unused in usdm) water spray auto and manual switches (respectively). this is according to aems pinout of the usdm and edm evo 9 ecus
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Old Mar 17, 2007 | 02:30 PM
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Should work on 7/8 too, just less ROM/RAM storage on 7/8 vs 9.

Whilst there are inputs and outputs we haven't linked them yet to the registers in the ECU. The multilayer PCB and SMT chips are difficult to follow, and Bez is struggling around a black box multiplexer thing at present.

So the main way to do this custom stuff for now is through the loggers.
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Old Mar 17, 2007 | 02:32 PM
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This would be incredible!
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Old Mar 17, 2007 | 03:03 PM
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F'in sweet. I have a switch under my steering column that I've been wanting a use for. It would definitely be perfect for map switching. Hmm, valet, race gas, stock, not so stock. Drool....
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Old Mar 17, 2007 | 05:55 PM
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This answers my "How do I have a Gas and E85 tune"

This opens alot of possibilities..

Race map, Street Map, Valet Map

Failsafe map, Nitrous Map, etc..

At this point you would need a spare input for a map switch.. a rheostat or input might work well if it had detents..

Even if the maps are in rom, this is a huge deal.
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Old Mar 17, 2007 | 06:06 PM
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This is too cool. I can't wait to for this to mature.
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Old Mar 17, 2007 | 06:11 PM
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I still love the idea of potentially using a fuel sensor to determine alcohol levels and have the ability to run true flex fuel applications
I will have to dig and see how MB does this. I love having access to most of MBs tech resources at home too
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Old Mar 17, 2007 | 06:16 PM
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Amazing...This is what I have been waiting for....And I agree with Andre , if we could have automatic fuel sensing / map linking, that would be great.
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Old Mar 17, 2007 | 06:30 PM
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wow great work Thanks for the info, i'd love to help further devolp this ! !
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Old Mar 17, 2007 | 07:37 PM
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again this will be amazing if we can get it to work
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Old Mar 17, 2007 | 07:57 PM
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would be sweet!
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