Muzzy Map for PCIII

[dragonchef]

I need a PCIII map for a full Muzzy system. I did quite a bit of searching already, and have emailed Muzzy several times :angry: , but all they give me is a map for a GEN1 (05). I have GEN2, 07, so I am guessing it would be differnt....

 

[Niehart]

Here is a blog that migh help:

https://www.fjrforum.com/forum/lofiversion/...php/t27653.html

 

[UselessPickles]

https://www.fjrforum.com/forum/lofiversion/...php/t27653.html

That's pretty much it. If you have some basic spreadsheet skills, it's very easy to do. If you have no spreadsheet skills, send me a PM.

 

[dragonchef]

Thanks for the help from Useless, as well as others. Useless built a map using Muzzy's '05 map, then Muzzy sent a GEN2 map a few hours later...also got others as well.

If you need 'em, PM me....I got 5 or 6 you can try!

 

[UselessPickles]

...then Muzzy sent a GEN2 map a few hours later

I would highly recommend just sticking to the official map provided by Muzzy, or one that you know for a fact was tuned on a bike that is similar to yours (same Gen, same intake/exhaust, same general part of the world with similar fuels, etc). The map that I calculated from the Gen I Muzzy map was pretty close in most areas, but was also off by about 10% is some areas (50-80% throttle, if I remember correctly). It could be that the Gen I -> Gen II calculation process is flawed, or it could be that Muzzy tuned the Gen II map to different goals or target AFRs in the areas that I saw the larger discrepancies, or maybe even a combination of both.

 

[UselessPickles]

... I just realized the flaw in my calculation process. I have a new Gen I -> Gen II formula to test. I'll try it tonight and see if the converted Gen I Muzzy map is closer to the actual Gen II Muzzy map. I may have to update my thread about Gen I -> Gen II conversion, as well as the calculated smoothness maps.

 

[UselessPickles]

... and that just blew my mind. After doing all of the math for my new "completely mathematically sound" approach for converting the maps, based on the fact that the maps are percentage changes to different baseline values that are assumed to result in the same total value, blah blah blah...

...it turns out that it all can be simplified down to the simple adding of the difference between the two DynoJet maps for stock Gen I and Gen II bikes, just like I was already doing.

So the math is all correct. The only remaining assumption that this relies upon that has not been proven to be true yes is that DynoJet's maps for stock Gen I and Gen II were both tuned for the same resulting air/fuel ratios. I would think that would be a pretty safe assumption, but the fairly significant differences between my calculated Gen II map for the Muzzy system and map that Muzzy provided for Gen II makes me wonder.

In conclusion, I'm happy that I have a self-tuning system that builds its own fuel maps so I don't have to worry about all of this