How do you read a PC map?

[Monty]

Hey all, just put a PC3usb and full muzzy system on my busa this weekend and am running the muzzy map from powercommander.com.

It's going to be a few weeks before I can get to the dyno and I wanted to tweak my map a little on my own, mostly out of curiousity etc.

I searched the boards for any posts on how to read the maps but didn't find anything....can anyone give me some quick pointers on exactly what it is I'm looking at when I open the map in the software?

What are the negative numbers vs. positive numbers etc..

Thanks,
Monty

 

[Monty]

alright....good times.....

 

[UR IT!]

Positive numbers are rich.....Negative numbers are lean. If I knew more than that I would tell you, but I just loaded my map into my pcIIIusb from my computer, hooked it up and cranked her up.....A thing of beauty!!

Dan::

 

[paulos]

i must get 1 i recon

 

[bacharles]

Hey Monty, try giving a shout out to Johnnycheese. I'm sure he wouldn't mind helping you out. BTW, he swears by the Muzzy on a Busa.


Brian

 

[atticdog]

Most maps i see dont have anything in the squares till 10% throttle
and the surging at around 2-3k I'm wondering if that it is under 10% maybe 2-5% ranges

 

[Monty]

Hey fellas, thanks for the ideas. I don't want to bug cheese or anyone else....they get paid to do what they do well. Was just hoping for some pointers so I could play around a little while I'm waiting to get a custom map done...no biggie.

As for the muzzy.....it freakin rocks! Sounds great, looks great and the power is tasty. Quite a bit more noticeable than I ever thought it would be and quite a bit smoother than stock with the PC3..even with the basic muzzy map from powercommander.com.

I couldn't be happier with this setup...and the price wasn't bad either...

I'll get her cleaned up and snap some shots this weekend....

 

[pyrrhic]

Positive numbers are rich.....Negative numbers are lean. If I knew more than that I would tell you, but I just loaded my map into my pcIIIusb from my computer, hooked it up and cranked her up.....A thing of beauty!!

Dan::

some people have all the luck.

 

[atticdog]

pyrrhic still running real rich?

 

[MeltDownZ]

Tuning the bike is next to impossible without a dyno and a air/fuel reading, but, here's what the stuff means.  The numbers on the map represent the percentage of fuel adjustment at a given rpm and throttle position.  So, 2000 x 10 is when your bike is rev'ing at 2000 rpm with your throttle 10% rolled on.  If you have a -5 there, than the PCIIIusb is going to lean out the fuel by 5%.  A 5 would mean it will add 5% fuel at this point.  The idea is to get the proper air/fuel mix at all rpms and throttle opening combinations if possible.  That would make your bike run optimal.  How to adjust it is where you need a dyno and and air to fuel reading.  With these and some experience, you'll know what adjustments you need to make.  If your bike is sputtering at a certain point and you see that it's running rich there, you might try leaning it up.  But, without the proper measuring tools, you're really shooting in the dark.



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[pyrrhic]

pyrrhic still running real rich?

somewhat, yeah. But now its mainly doing the herky-jerky in the 3k range.

 

[atticdog]

the herky-jerky in the 3k range is pretty normal
till you get a custom map
I'll send you another to try

 

[Johnnycheese]

Tuning the bike is next to impossible without a dyno and a air/fuel reading, but, here's what the stuff means.  The numbers on the map represent the percentage of fuel adjustment at a given rpm and throttle position.  So, 2000 x 10 is when your bike is rev'ing at 2000 rpm with your throttle 10% rolled on.  If you have a -5 there, than the PCIIIusb is going to lean out the fuel by 5%.  A 5 would mean it will add 5% fuel at this point.  The idea is to get the proper air/fuel mix at all rpms and throttle opening combinations if possible.  That would make your bike run optimal.  How to adjust it is where you need a dyno and and air to fuel reading.  With these and some experience, you'll know what adjustments you need to make.  If your bike is sputtering at a certain point and you see that it's running rich there, you might try leaning it up.  But, without the proper measuring tools, you're really shooting in the dark.

Melt you are close but it is not a %.
In otherwords if you put a 5 in a cell it does not make it 5% richer

 

[atticdog]

JC ive noticed not many maps have anything in the 2 and 5 % throttle settings at steady cruising are we already at 10% throttle?

 

[MeltDownZ]

Tuning the bike is next to impossible without a dyno and a air/fuel reading, but, here's what the stuff means.  The numbers on the map represent the percentage of fuel adjustment at a given rpm and throttle position.  So, 2000 x 10 is when your bike is rev'ing at 2000 rpm with your throttle 10% rolled on.  If you have a -5 there, than the PCIIIusb is going to lean out the fuel by 5%.  A 5 would mean it will add 5% fuel at this point.  The idea is to get the proper air/fuel mix at all rpms and throttle opening combinations if possible.  That would make your bike run optimal.  How to adjust it is where you need a dyno and and air to fuel reading.  With these and some experience, you'll know what adjustments you need to make.  If your bike is sputtering at a certain point and you see that it's running rich there, you might try leaning it up.  But, without the proper measuring tools, you're really shooting in the dark.

Melt you are close but it is not a %.
In otherwords if you put a 5 in a cell it does not make it 5% richer

Would it be more correct to say it add's 5% more fuel compared to non-adjusted?

 

[Johnnycheese]

JC ive noticed not many maps have anything in the 2 and 5 % throttle settings at steady cruising are we already at 10% throttle?

PC2 do 2-5% on the map table so the AAP table will be zeros

 

[Johnnycheese]

Tuning the bike is next to impossible without a dyno and a air/fuel reading, but, here's what the stuff means.  The numbers on the map represent the percentage of fuel adjustment at a given rpm and throttle position.  So, 2000 x 10 is when your bike is rev'ing at 2000 rpm with your throttle 10% rolled on.  If you have a -5 there, than the PCIIIusb is going to lean out the fuel by 5%.  A 5 would mean it will add 5% fuel at this point.  The idea is to get the proper air/fuel mix at all rpms and throttle opening combinations if possible.  That would make your bike run optimal.  How to adjust it is where you need a dyno and and air to fuel reading.  With these and some experience, you'll know what adjustments you need to make.  If your bike is sputtering at a certain point and you see that it's running rich there, you might try leaning it up.  But, without the proper measuring tools, you're really shooting in the dark.

Melt you are close but it is not a %.
In otherwords if you put a 5 in a cell it does not make it 5% richer

Would it be more correct to say it add's 5% more fuel compared to non-adjusted?

Nope it does not add a percentage. in otherwords. if your injector was tiggering at 280milsec putting in 5 more will not increase the pluse 5% to 294 milsec.
Although is some cells it is close to a 1=1% ratio but that also varies bike to bike and only on PC3

 

[atticdog]

JC Thanx i get it now

 

[pyrrhic]

the herky-jerky in the 3k range is pretty normal
till you get a custom map
I'll send you another to try

Hey, thanks for the hook up. havent had a chance to try it. Havent been riding it because of the unevenness of the it. When I go to the tuning shop eith this map maybe they would charge some much to adjust it. Just maybe.