Re: -= Ultimate Emanage Thread =-
Here's an article on how someone setup MAP on their ultimate emanage.
Steps for setting up the output airflow map (MAF elimination):
1) First make the adjustments you want in the injector adjustment or
airflow adjustment maps to get the air fuel ratios where you want them.
2) Once you've got the right A/F ratios, warm up the car to normal
temperature and capture some log files while driving to get the
desired airflow output volts, the RPMs, boost level and A/F level (for
later reference). You'll especially want to collect the values around
startup, idle, normal takeoff, cruise (like at 60 mph on a flat
stretch of road) and a full-throtte/boost run to redline.
3) Go to the parameter settings and choose airflow output on the maps
tab.
4) Choose the airflow output map, choose the pressure sensor you are
using and scale both axis to your needs.
5) Open up the log file in the data logger and start clicking on the
graph at the interesting spots (idle, smooth cruise, normal takeoff
from a stop (when the RPM drops below idle speed but you are under
load) and then the data points during your full throttle/boost to
redline run.
6) You'll notice that each time you click on a different part of the
log graph, a cell on the airflow output map will be highlighted. Read
the airflow output volts that was logged from your MAF (in the table
on the right side of the logger) and put a reasonable value in each
cell that gets highlighted. Don't expect them to be exactly the same
across your log (load changes) but they will be pretty close. Do this
for the interesting parts of the log. Click on File and save your map
in case you make a mistake later and overwrite your map values.
7) Now fill in the empty cells on the airflow output map with
"reasonable" guesses. I went down the rows and used the interpolate
cells option. Be careful not to change the cells you've hand entered.
For example, highlight the top entered value and drag down across
the empty cells in the column till you come to another entered value.
Click on Edit and choose "Interpolate column." It will just add
interpolated values between the two points you've chosen. Repeat for
the whole map. There will be spots you have to guess because you
didn't collect any data but they probably won't be in the critical areas.
8) Save the file again under another name.
9) Connect to your Ultimate and click on the Export Data button (far
right) and wait for it to update.
10) Bring up the Airflow output map and the data logger. Start the
logger and crank the ignition. Let the car warm up to full temp before
you get too excited about logging/changing the map.
11) If you still have your MAF hooked up (good idea) you can drive a
bit and log the differences between your Airflow output map and the
MAF's actual values. They don't have to be exactly the same, but
you'll be able to tell when you've guessed wrong on value in a cell
(bogs because it is too lean or rich). The critical part is to make
sure you got your boost run in correctly. Watch the log or A/F meter
carefully (maybe someone else should do this while you drive) and be
ready to come off of the gas if it didn't get entered right. Make
corrections to your map as needed. After you've got a reasonable
starting map, disconnect your MAF connector and try it bareback. Save
the file under a different version name and I'd suggest saving another
copy under the name nomaf-safe (so you can go back later if something
goes wrong with your working map).
12) You can actually take your old MAF out of the car at this point.
Let the car cool off and then adjust the cold startup
characteristics using the water temp adjustment map (if needed).
I'm sure there's more here, but this should get you started.
Mike
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