I am glad to hear this is actually working.

 

I'm pretty excited to hear this. Now I think I can buy the big shots as soon as they come out instead of waiting to afford the PCIII at the same time. My bike is pretty much bone stock other than the exaust mod and I don't like putting on after market exausts without doing something to keep from being too lean. Heck, I'd even run too rich for awhile if I had to. Great job testing this stuff out!

 

hey Dark, with the pc3 cant we do this now with the trim control. It says that it will adjust + or - 5% only. The ECU thing goes up to 128 or -128 but i dont know what the numbers mean. I'd rather do it with the pc3. Mine was CO1 at 0 and CO2 at -2. What would you suggest as i have the same sluggishness in first gear. I also have chaimbermaids. 2nd really ripps though... darn near leaves me every time. Should i keep the difference between cylinders or even them out. any suggestions would be greatly appriciated.

 

i just went in and played with the pc3 and the bikes ECU to see what i could find out... in short not much but this is what i learned. I set the ECU co1 and co2 to 0, then after everything was all back together i hooked the pc3 to my laptop and checked out the trim levels. (Advanced options must be set, and you must have it hooked to the pc3 and the key on, but doesnt have to be running) The trim levels where 0 and 0. I assumed that since i put the ECU at 0 and 0 it would be so. So i told the pc3 to make the trim + 2 on each cylinder. I then checked the ECU to see if it changed. It did not. It still read 0 and 0. I did the reverse too, changed the ECU to +4 and 0 and checked the PC3 and the Trim values didnt change. So all that to say the PC3 only adds or subtracts to what the ECU tells it, da. Now the PCIII only allows a +5 or -5 percent so im not sure how that corelates to the 128 settings on the ECU. So in the end i put the trim at +2 percent on both just to see what it will do. It starts harder so it might not be good. But i havent ridin it as its 10pm. Hope this helps someone. If anyone has any more info i'd like to know so i can adjust the trim better.

 

How did you get the pc3 to communicate without the engine running? My bike has to be running to download or alter the values. Unless I hookup the 9v adapter.

 

yep... i got a cable and 9v adapter with my purchase... the guy hooked me up for 250. So yes sorry to those of you who dont have one. I assumed eveyone would get it. If you dont have the 9v you have to turn on your engine.

 

Happy to hear it worked out for you guys that have tried it, glad I could pass the info along, I wish I had found it before I coughed up the cash for a PC111

 

i still think the pc3 is worth the money. you could adjust the ECU but i think haveing the map on the pc3 helps out far more then just a general richening or leaning of the mixture on the ECU.

Can anyone tell me what does trim do on the pc3 or co1 on the ECU for that matter... is it just making the mixture rich or lean? i think thats it but i want to know for sure.

 

Ok here is some wishywashy stuff for you...

"trim" on the PCIII or the adjustments on the ECU are letting you change how rich or lean each cylinder is running independently.

On my other V-twin bikes it is/was common to run the rear cylinder a little richer. I ran it a little richer because the rear cylinder runs hotter than the front, and this prevented it from going to lean.

That being said it sounds like some of the Warriors here are set up just the opposite from the factory, mine wasn't though. The rear was set a little higher than the front. But Yamaha certainly holds all the cards and knows more than I do.

My uneducated actions would be if I had the PCIII:
IF I had a accepted map for my bike and exhaust/BAK/etc. and I noticed it started to run rougher the hotter it became (Stuck in traffic or some hard and fast riding); I'd go into the trim settings and beaf up the rear, one point at a time, to see if it cleared up.
Or
if no amount of throttle body syncing would make the bike smooth out I'd go up a point in the rear just to see if it helped.

Maybe someone close to Barons or Patrick Racing might pose the question to them. They are certainly the experts as far as tuning is concerned.[/emoticons/emotion-2.gif]

 

now knowing that the ecu can be adjusted,this certainly throws a different light on custom mapping.i wonder if the dyno techs are aware of this.seems like it would really make a substantial difference in the mapping process if one was using a custom map and knew what the initial ecu settings were.i guess what i am saying here is that in addition to altitude and ambient air temp we now should be aware of the stock ecu settings.i know that the pc3 tricks the ecu into controlling the a/f mixture but i can't help wondering that since the ecu owrks off of the sensors and the pc3 doesn't it would seem to me that a correctly dialed in ecu would better compensate for altitude,ambient temperature changes.i beleive that at least part of the ecus list of functions include the ability to change based on current riding conditions based on the sensors input.while custom mapping the pc3 overrides this to a certain extent not allowing for the slight leeway needed for temp cahnges and alt changes.anyway it is food for thought

 

the computer mod works fine its not that complicated its simply richens or leans the system by widening or shortinig the inj pulse to fine tune this for your specific ambient temp take it to a diagnostic center or better yet a dyno to tune youre bike so u can be at a co%
of 4-6 if not do a few runs check plugs for a light brownish color.check out X-TREMECUSTOMCYCLES.COM look at warriors in there gallery under customize

 

plug plug, who are you? got some bad as stuff there, but i would think ti would sell a lil' better if you lowered the prices.. You have got to be working for them!!! keep it commin bro! but in the future you should post it in the venders forum now that you got everyones attention!!!

 

quote:Originally posted by boogie man

now knowing that the ecu can be adjusted,this certainly throws a different light on custom mapping.i wonder if the dyno techs are aware of this.seems like it would really make a substantial difference in the mapping process if one was using a custom map and knew what the initial ecu settings were.i guess what i am saying here is that in addition to altitude and ambient air temp we now should be aware of the stock ecu settings.i know that the pc3 tricks the ecu into controlling the a/f mixture but i can't help wondering that since the ecu owrks off of the sensors and the pc3 doesn't it would seem to me that a correctly dialed in ecu would better compensate for altitude,ambient temperature changes.i beleive that at least part of the ecus list of functions include the ability to change based on current riding conditions based on the sensors input.while custom mapping the pc3 overrides this to a certain extent not allowing for the slight leeway needed for temp cahnges and alt changes.anyway it is food for thought


Boogie,
i was under the impression the pc3 only added or subracted to the stock ECU. If thats true wouldnt the ECU do its thing with the altitude and temp and then the pc3 would add or subtract to that? So your still getting the adjustments... am i correct in thinking this?

 

someone tell me where the instructions are on how reprogram the stock ecu. i've got the pc3 but have yet put in the custom maps. the thing is really running lean off throttle and i'm disconnecting it til i put the new map in. thanks for any help.

 

did you try searching?

http://www.rswarrior.com/forums/topic.asp?TOPIC_ID=920&SearchTerms=ECU,reprograming,,

 

Heya Meltdown,

I think the train of thought is this...

You get a certain exhaust and intake.
you get the map from someone here that has the same mods.
you donwload the map to your PCIII and your bike runs pretty close to theirs.

BUT

It looks like everyone's ECU is set up a little different from the factory/dealer, so that map you got from the other guy might only work really well on his bike, unless you set up your ECU the same as his.

Though, I'm guessing you'd not see too much difference as the variances between the ECU's setup seems to be rather small. And certainly the variances in each of our bike as they come off the production line would be enough to make you want to adjust any map you have received if you were so inclined.

---------

Here is some more that I have done...

My bike is baseline, no mods except for removing the AIS.

I put all my settings back to my original "stock" setup. Ran the bike to work and adjusted the idle speed back to 950-1000rpm.

Runs good IMHO, pulls fine, no back fires.

I pulled over, and adjusted the ECU 6 points up on both cylinders.

"Felt" better. Didn't have to give it as much gas pulling away from a stop. The exhaust note sounded a little smoother as does the motor. The change is not night and day, more like running premium gas instead of el cheapo stuff. I didn't feel any flat spots in the power and with this adjustment, my idle speed remained the same.

I am inclined to bump it up more until it bogs on the gas or shows some other sign of running too rich...all just to see where the boundries are.