| Author | Message | ||
     Petethekiller |
I just got my CR pump gas ECM in the mail today and gave it a whirl. First thing noticed like everyone else how smooth the motor is at low RPM and no more Herky-Jerky under 3000! So I rode for only about 10 miles and noticed that it feels quite a bit softer on the bottom end. I tried and tried to power wheelie from a roll in both first and second gear and no dice. I love how smooth the bike is but have you guys noticed any lose in torque? Thanks | ||
| Fresnobuell |
Not from the mid-RPM to redline! It's a race ECM so losing some down low for gain on top is normal IMO. | ||
| Mountainstorm |
I would say put some miles on the new ECM so it can adjust and compensate and your power will come back shortly. I too thought that the lower RPMs were less torquey but after a thousand or two miles it's all there. I can yank it up it 1st and 2nd with ease and if I hit the power just right I can get it to lift in 3rd as well. | ||
| Xelerator |
That's correct for camshafts but not for software. ...losing some down low for gain on top is normal... | ||
| Petethekiller |
Is it possible that this is by design? The bike feels more controllable but less aggressive. | ||
| Dannybuell |
From: Fresnobuell thread RE: Erik Buell Racing ECM & deceleration; http://www.badweatherbikers.com/buell/messages/290 431/558628.html My comments in brackets: "Okay all you "experts", I received an email from an Erik Buell Racing tech (at 10:38 his time mind you) and at the 2000rpm idle the Idle Air Controller allows more air past the plate when you close the throttle. It does this even when you close the throttle at higher RPM. By letting more air past the closed throttle plate this slows down the rate at which the engine decelerates reducing engine braking[loss of torque sensation]. This also reduces wheel hop during an aggressive down shift. [that implies very little faith in slipper clutch to me]" The most compelling thing about a HDB bike is the massive torque. The Erik Buell Racing ECM coasts more on deceleration. There is one other thing I do before trail braking begins. I usually have enough rpm's to expect some sort of Drop-Throttle-Oversteer (DTO). The S1s stiff suspension at 4000-6000 creates enough oversteer that trail braking becomes unneeded. Economy mode is where I do most of my trail braking, when the torque is not there. I will ask Erik Buell Racing to keep the stock IAC setting so I can enjoy that which I know. Sometimes you need all the tricks engine, brakes, pressure on the inside peg, hanging off the side, sometimes you don't. | ||
| Myotherbike |
Great Thread, I had picked up my Erik Buell Racing ECM a couple weeks ago and was waiting for my 620 mile service before I installed it. Well, the service was last Friday and I installed the Erik Buell Racing ECM on Sunday. Due to poor weather I have only about 50 miles on it so far. Some things I noticed before I had the service was that the bike was really starting to do power wheelies easily. Maybe it was me getting more comfortable with the bike being that this is my first sport bike, I had a V-Rod and currently have a FLHX. But either way, it was amazing. After installing the Erik Buell Racing ECM I noticed that it is amazingly smoother, has less engine braking, doesn't give me the cold startup message and the idle is lower. I took the ECM right off the shelf, no special requests (stock air filter and exhaust). I watched Michael pick it off the shelf. The other thing I noticed is that the does seem to have less torque in the lower RPM's, no more power wheelies for now. As others stated maybe it is a side effect of smoothing out the lower RPM's or maybe it just needs time to 're-learn' the bike. I know 50 miles isn't anything. Now, before I get flamed, I am not complaining. I still love the bike and plan on sticking with the Erik Buell Racing ECM, I really don't need the little power wheelies anyway, if they come back that is a bonus. For me, the advantages of the Erik Buell Racing ECM are far greater than the perceived loss of grunt. | ||
| Dirty_john |
I fitted the Erik Buell Racing pump gas race ECM some 350 miles ago and confirm lower operating coolant temps, slightly better mpg, much more torque in the mid range, top end rpm torque seems improved, off to on throttle response far better, no lean surge and the reduction in engine braking suits me fine and I find makes the bike more stable on corner entry, especially under light trail braking - as I have stated in other posts its and excellent add on to the bike - should be the first after market part everyone gets hold of. Especially when Erik Buell Racing can alter the progamming to suit the needs of individual users. Major grin factor | ||
| Fresnobuell |
I would say put some miles on the new ECM so it can adjust and compensate and your power will come back shortly. I have been told by a reliable source this is a complete myth. | ||
| Mountainstorm |
Fresno do you have an Erik Buell Racing Pump Gas Race ECM installed that has the O2 sensors active? Or are you just talking out your ass? I've got one installed and I am reporting what I know from riding it, not some second hand information that might be BS. D_Adams corroborates that the stock ECM "learns" and recalibrates. So the Race ECM doesn't? (Message edited by MountainStorm on April 30, 2010) | ||
| Zac4mac |
When I got mine, Mike e-mailed me a note about what he sent in the ECM and asked me to ride it a while before I take her to a dyno. Just got a Uly yesterday so I'm not riding Loretta much now. She gets torn down for the 24.8k service very soon(days) Z | ||
| D_adams |
I could see the race ecm not learning if the O2 sensors were disabled/unplugged or if the learning loop was turned off, but that would be the only reason for it that I know of. You can do that on the stock ecm, but why you would want to totally disable the O2 sensor is beyond me. I've got wideband with narrowband output so I can see what it's really doing, but that's a whole different ballgame. It's still running around 14-15:1 at cruise right now. I need to do some playing, I just haven't had a lot of spare time to do it yet. | ||
| Dannybuell |
E-B-R ECM in my mailbox! I got my email off too late for the ECM change order on the IAC. I'm off to the garage. Weather permitting, impressions and follow up tonight or tomorrow. | ||
| Dannybuell |
I just got the E-B-R 09 CR ECM plugged in and screwed back down. I did the TPS reset 3X, and it started but did not seem to choke very much. After idling for a minute or two I turned the throttle and it died. TPS reset 3X again and it started reluctantly idles and after several minutes of idling dies with twist of wrist. I am not a troll, Does anyone know what is wrong? p.s. I plugged the old ecm in and it runs fine. (Message edited by dannybuell on April 30, 2010) | ||
| Maul |
DannyBuell,try disconnecting the Bank Angle Sensor. The same thing happened to me and I unplugged the BAS and everything worked fine. | ||
| Mountainstorm |
If you are in Europe unplug the Side Stand switch, if US BAS. Mine started and ran great even with the BAS plugged in. I'd try the TPS reset thing a few times to see if maybe you did not do it just right or something. Key On Run Toggle On 1 sec WOT (1 Mississippi) 1 sec full closed repeat total of 3 X | ||
| Dannybuell |
Maul and Mountainstorm; Thank you for your prompt responses. I am in the USA state of Oregon, on the west coast below washington and above california. BAS huh? Mountainstorm what is the "run toggle on" part, the kill switch? Is it one second or five? THX | ||
| Maul |
Dannybuell, the BAS is located just forward of the ECM. There are two screws and a housing that should say "TOP". Just unplug that set of wires and then reset your TPS like Mountainstorm said. Good luck. Oh its is for 1 second for three cycles. | ||
| Dannybuell |
TPS everything... I found the BAS and unplugged it. It wouldn't even start. Plugged it back in and no start. plugged the original in and bang, starts right up. CS time at E-B-R! | ||
| Maul |
Yup, that is probably a good next step. Sorry. | ||
| Skntpig |
If your going to reset the TPS and then ride the bike...after you do the 3x on and off throttle is it necessary to turn the key off and back on or can you just ride? | ||
| Dannybuell |
Nobody is perfect. I tried walking on water once and sunk like a rock. THX again | ||
| Dannybuell |
just received an email from E-B-R; "Dan, We're trying to figure it out. This is very weird. Maybe the ECM has a problem itself. Since you received one that was just sent out, we are trying out one ourselves to make sure something didn't go wrong in the very latest flash refinement. Thank you, Tech Support Erik Buell Racing" Same day response from E-B-R! | ||
| Bob_thompson |
Dan, this may sound awful simple but have you disconnected the battery, just the ground, completely off the terminal before you changed the ECM. I did not the first time and had nothing until I reasoned out to do that. And its in the service manual. I can switch back and forth now with no troubles if I do just that. Bob | ||
| Dannybuell |
Good question Bob, I disconnected the negative just like the manual says. I put a rag between terminal and the three leads to keep them away from each other. | ||
| Blackbear |
Mountainstorm, you have had a lot of experience with the EB gas Race ECM (I also have)and your bike is near set up close to mine, K&N, only mine has the RT-5 exhaust. Here is my problem, after a good warm weather ride the bike starts running poorly and backfires even above 4500 rpm. Great full throttle, but small throttle openings, steady, very poor running. No error codes, but I was thinking that I may have a O2 sensor that may be borderline. I have read were we can use diag mode to monitor a lot of info ourselfs but I dont know how to access those settings even though I can get it into the Diag mode. Any clarification on how to access this info after I push both buttons at once and get into Diag mode. I would like to monitor AF ratio and open throttle positions, feedback from O2 sensor, etc, etc. Another item here is that people have had total disagreement on is after installing the EB gas race ECM is re-setting TPS every time I start the bike. Some say do it everytime, some say let the O2 sensors give feedback to the ECM and over time "re-tune" for optimal running. Who is right? |
