08-24-2014, 09:12 AM #1
08-24-2014, 11:28 AM #2
- Join Date
- Aug 2009
- Discovery Bay, CA
you're doing the right thing by asking for help here...... be careful, playing with those tables make things go boom!
08-24-2014, 06:25 PM #3
There are 4 main ign maps in the Yamaha package
They are split up like this
Manifold pressure based
A&B version of the above
The A/B thing is so that you can switch between 2 mapped settings
This means the engine is using either all the A maps or all the B maps
You need to configure a switch to do this and it is allocated as "Engine Mode"
Assuming that you havent done this then the engine will be using the A maps
You can tell when you are on line and you look and see which map is being used, push the space bar to jump to current active site which will take you to the active map.
So now that you have established that then I would forget about the B maps for now, in fact make them 0 so as to avoid confusion.
Now back to the other 2 maps
TP based and MAP based
Right now your showing us the TP based timing
Is this thing turbo charged?
If yes and if not on race fuel then you should be using both the MAP and the TP based
Or if thats confusing then just use the map based one to start with.
Here is the thing to remember and is CRITICAL
The 2 maps (TP based and MAP based) are ADDITIVE
So if you have 26 degrees in one map and 26 in the other at the same load site that means 52 degrees timing BANG!
If you look at the base files you will see how I think they should be configured but its up to you of course.
08-24-2014, 09:41 PM #4
pete my ski is turbocharged , and yes i do have the allocated switch already so that i can change from A to B
08-24-2014, 09:52 PM #5
08-25-2014, 11:16 AM #6
i have two tables for mode A and B for the manifold pressure
example : in the TP table the ignition is set at 26 deg at 9000 rpm and throttle is 100% opened , next in the manifold pressure table at 9000 rpm and at 240 KPA the timing is (-6) deg , so the real timing would be : 26 deg from TP table - 6 deg from manifold pressure table would be = 20 deg .
am i right on this PETE ? waiting for your answer bro so i can rest my mind and go test my ski
08-25-2014, 12:28 PM #7
MOTEC M1 tuning the ignition, need help
Yes. The TP based table and the MAP table work together to give a final ignition advance. As the boost pressure reaches 10 PSI or so your Map based ignition table pulls timing from the same corresponding value on the TP based table. You can advance your timing by closely monitoring knock activity in the I2 software.
08-28-2014, 04:28 AM #8
08-28-2014, 10:47 AM #9
No knocking that I can see there. Are your knock channels being logged at 10hertz or 200 hertz? To be able to see actual knock as it happens it must be logged at 200hertz. 10 hertz dosent give the resolution needed to see knock. If you don't have the upgraded data logging package you can't log more than 10 hertz. To get the 200 hertz needed to accurately monitor knock you have to purchase the upgraded logging
08-30-2014, 12:10 PM #10
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