| Author | Message | ||
     Daves |
Should have some numbers tomorrow! Ride to the edge! Dave Iowa HD/Buell (Buell Cycle Center) | ||
| Oldmanfirebolt |
Daves, Sounds good, let us know... I too will have a few dyno runs with the new Velocity Stack. Brion and I have now done some very extensive A/F Ratio tests and are ready for the dyno runs with the velocity stack. We have various runs we are scheduled to perform and I will post them also to this site. Curious of where you come on HP! Good luck! CBJ | ||
| Blake |
Good luck Dave! Will be anxiously awaiting your results. You gotta get that dyno recalibrated though, methinks. | ||
| Buckinfubba |
oh come on were waiting already......come on come on...... I had to do that since thats what I got when doing the pipe test ..... I can't wait to see these numbers. got a guy here wanting to do a 1050 and head work if he could just see some numbers | ||
| Daves |
Jeez! It's not even 9am here in Iowa! Reece has some issues to work out with the PCIII, I think he will be working on it today. I am as excited as anyone to see how it runs, too bad we got 3 inches of snow last night. There won't be any "real world" results for a while now. I think I might have Doug haul the bike to Florida so I can ride it around Orlando to put some break in miles on it. Doug's bike with package option #2 should be done soon also. Ride to the edge! Dave Iowa HD/Buell (Buell Cycle Center) | ||
| Golin |
What, you're gonna let a little snow stop you? Weak. Just put on your steel shoe, and drift it around the corners. Besides, snow is softer than dirt to fall in.  | ||
| Dasxb9s |
Dave... What does the PCIII add to the equation beyond what the ECM does? What kind of gains... where? ...and I do have some lucid moments! | ||
| Daves |
More fuel at the right time. I don't know much about them, that's why I have techs doing it. Ride to the edge! Dave | ||
| Dasxb9s |
Next question... I forget if your ride is an S or an R... Where the hell would a PCIII fit on a 9S??? Certainly not under the seat with the ECM? | ||
| Fullpower |
I dont get this PC3 thing.i thought the ECM uses O2 sensor input to keep A/F mixture real close to ideal, and will adapt to changes in temp, etc. if this is the case, why would an external diddle box help? and if it tried to enrich mixture, the ecm should sniff the O2 sensor, and then lean it out to compensate, right? if the mixture is even within 5% of 12.5/1 the motor should be making its maximum torque. a few percent each way ought not to make much diff. and if it goes any leaner than 14.7 it will start popping, surging, and be real obviously to lean. some one please explain why an ECM cant do the job that an ecm is built for. | ||
| Misato |
I have an S, its in the airbox.... | ||
| Buckinfubba |
it can compensate to an extent but it has a range. dave has the force pipe and he has gone to a bigger bore. The ecm can not compensate for those changes and what is programmed in the open loop of the system will not have a enuff fuel for these changes. the o2 sensor is not always on , only in the closed loop is it on. | ||
| Daves |
The ecm doesn't have "parameters"(sp) wide enough to compensate for the extra cc,bored throttle body,swiss cheese air box,ported heads with bigger vavles,high comp pistons,cams(see where I'm headed?) on my bike. Therefore it needs the PC to be able to run right. People that are LOTS smarter than me(Aaron for one) have figured this out and I'm sure could explain it much better than I. Ride to the edge! Hey, I just ride,race and sell them! Dave Iowa HD/Buell (Buell Cycle Center) | ||
| Austinrider |
Dave when is the dyno chart gonna get posted. What did you have done again and how much did it run ya? | ||
| Dasxb9s |
Thanks guys... (Dave...Buckinfubba...Misato) Shazam has a big bore 9R... and I just found out he has a PCIII... I did not add it up to the big bore thing prior to me asking this question... and it seems he is NEVER around... traveling for work... to ask. One of these days Dave... I will make it to meet you... my sweetie's kids live in Anthon... and there are some roads up in that area I want to burn up! ...and make the pilgrimage to Waterloo | ||
| Daves |
Last weekend of April, come up for the Buell Bash/BattleTrax weekend. Ride to the edge! Dave Iowa HD/Buell (Buell Cycle Center) | ||
| Fullpower |
ok thanks for the explanation about pc3. next question, why not just put in the XB12 race ecm? that should accomadate the big bore, and is only $180, somewhat less than pc3, right? | ||
| Glitch |
why not just put in the XB12 race ecm? I think it's because the stroke is different. There was a discussion about putting the 9 on the 12 to raise the rev limit. Can't really remember exactly why it was deemed a bad idea, only that it was. But there is another reason not to, it would lower the rev limit. Could be wrong though, goodness knows it wouldn't be the first time... | ||
| Wyckedflesh |
9 to 12 = bad things happening to the motor 12 to 9 = dropped revlimit PCIII is adjustable with a laptop, race ECM isn't. Now my question is, since there has been adaption of a PCIII for the 9...how bout the 12? | ||
| Buckinfubba |
there really isn't a pcIII for the 9's its the ol X1 pcIII which would work on the 12's | ||
| Wyckedflesh |
Ok...how do I get one and how much of a biatch is it to adapt? (note I emailed Nallins about their set up when I first read it going through the archives a bit ago trying to find out about the force pipe/big bore/PCIII setup and have recieved no reply.) | ||
| Daves |
I think they list for about 330.00 Delay in getting the numbers, Reece's brother came to town and Reece is taking a couple days off. Ride to the edge! Dave Iowa HD/Buell (Buell Cycle Center) | ||
| Wyckedflesh |
no worries my credit card has run off and hid some where, it left a note telling me I abused it | ||
| Xb9 |
I have a Latus on an otherwise stock XB9R and have tried both the stock and race ECM. After either ECM had adjusted for the better flow of the Latus muffler, it would run rich in the 2.5 - 4K range. The problem here lies with the ECM's lack of ability to adjust the shape of the fuel curve. The ECM's can only enrichen or lean out the whole curve, not reshape it. It adjusts the curve via what the oxygen sensor reads in the closed loop range. The PCIII allows you to reshape the fuel curve. The PCIII has button adjustments if you don't have access to a dyno, which I found adequate for street use. I ended up 3 steps lean on the low end, 2 steps rich on the midrange, and three steps rich in the high end buttons. Each step is a 2% change. Runs real crisp throughout the RPM range now, where it would gurgle (rich) noticeably on the lower end before. Just had to experiment with it some to get it dialed in. I also run the high performance O2 sensor option, I don't think the PCIII works well without it. |
