Hi All, I'm looking for a bit of help interpreting the TuneECU map info. I've just fitted my MotoBox, ditched the SAS, removed the secondary flies and disabled the O2 sensors and have tried a couple of different maps.

I started with the KTM Akro map just to hear it running and a brief lap around my local twisties. I next tried one of the maps from the sticky with the description of "08 SD james' map for grim and motobox modified from rallsy's info.hex" the map wouldn't load and TuneECU complained about wrong file format or something, anyway I manually copied and pasted all the maps ( F, l, and I ) into the original KTM Akro map re-saved it under a different name and downloaded it to the bike. Another test lap or two and it seems to run fine ( idles ok and no strange noises ).

When I do a map comparison I can see the highlighted fields that differ between the two and generally ( but not always ) the numbers on the "richer" map are larger. A look at the comparison between the "I" maps ( which I understand to be the ignition advance in degrees before TDC ) shows the KTM Akro map with bigger numbers than the "Rallsy" modified map that I presumed was running more ignition advance. So I'm confused.

My question basically is what do the number in the different map tables represent and how can I make an sensible assessment on what each map is doing.

Any enlightenment would be much appreciated as the nearest dyno is 700 Klm's away and I'd like to know I'm not doing any damage to the engine.

Cheers.

For the fuel maps the figure is the time the injector is open in milliseconds.
For the ignition maps the figure is the advance in degrees.
Keep in mind that Tuneecu follows KTM cylinder layout of rear is 1 and front is 2! If you plan to import PC maps you need to swap map 1 and 2 arround as PC maps are front 1 and rear 2.

Hope this helps.

Thanks for the info, Guy.

Are the numbers in the fuel maps literally in milliseconds ( 9000 milliseconds = 9 seconds ) or are there decimal points applied some where ?

In trying to pick a map most suitable for my setup are there any general "rule of thumb" parameters to look for ie. lower safe values for fuel maps and ignition advances at specific rev/throttle ranges. The only yard stick I have as a reference so far is the KTM Akro map which in some areas is richer and more ignition advanced than maps that have been setup for Motobox, no Flies or SAS etc. ( which I wouldn't have expected ). The Motobox makes some very distinct resonance noises at specific revs. Are there any particular revs ranges that should be considered more than others when comparing maps. The reason I ask this is once again in comparison to the Akro map some custom maps have major "spikes" in the numbers at certain points ( I was expecting to see a more gentle change in the parameter curves ).

Sorry if the questions are a bit vague but I have no real understanding of FI mapping just a general sense of engine tuning from old school backyard experimentation.

I second this question. Anyone up for an in depth answer I have a few of the maps saved on the program, and just wanted to interpret the differences between them so I can start making some of my own adjustments.