| Author | Message | ||
     Kidder |
I'm contemplating getting the Erik Buell Racing ECM for my CR. It's totally stock. I was hoping to clean up a bit of that lean condition. Anyone out there running the stock exhaust and ECM that is tuned accordingly? | ||
| Jdugger |
I had the Erik Buell Racing ECM and a stock exhaust on my B bike for a while. I did it to get the better off-throttle IAC settings and high idle, but it makes it a better ride all around. I can actually HEAR the difference in the motor's sound on the Erik Buell Racing ECM than OEM. | ||
| Kidder |
Jdugger, Thanks for the reply. So, it truly is plug and play, correct? | ||
| Curve_carver |
I have the stock exhaust calibration and I love it. It definatly has more umph over the stock calibration. I did have a hmf with the ebr calibration but I noticed the lack of engine braking which drove me nuts. I went back to stock exhaust ebr calibration and all is good again. I'll admit there's more hp to gain with the hmf but it wasn't worth the loss of engine braking or herky jerky on and off the throttle throughout the curves. (Message edited by Curve_carver on February 16, 2011) | ||
| Fresnobuell |
herky jerky on and off the throttle throughout the curves. So why would the stock exhaust improve the on/off throttle response? I have the Barker/Erik Buell Racing ECM combo and i find it FAR superior to the stock setup.} | ||
| Curve_carver |
Backpressure plays a role that you might not understand. Im happy you like your setup fresno. Everyone has their own opinion. My opinion was stay stock unless your looking to squeeze every hp you can. Remember now Al never tested the stock exhaust with a tune  I was told by ebr that 3 hp is what youll gain with a open pipe with a calibration over the stock exhaust and calibration. How long does your butt feel the three hp? | ||
| Spectrum |
Tried to order this today and is showing out of stock | ||
| Ohsoslow |
3 peak hp and an increase in hp across the board are two different things. | ||
| Blake |
>>> Backpressure plays a role that you might not understand. I've always wanted to know the explanation of that thinking. Care to explain it? Maybe start by defining what "back-pressure" is. I'm not even sure of that. | ||
| Blake |
>>> 3 peak hp and an increase in hp across the board are two different things. Well said! Three RWHP peak and a bunch more torque all around is tough to not like. The benefits of improved throttle response are important to many folks too. | ||
| Curve_carver |
I amazed some can't understand that back pressure cushions an engine When you whack the throttle what happens? Your cam chains ,gear drives,balancing shafts and all the slop in the engine tightens up. With a free flowing exhaust their is no back pressure. It smacks faster and harder. I hope you can understand that blake. These engines are rattle boxes and I'd rather have more cushion than clunking. But what can you hear with a aftermarket pipe? nothing lol This is just my observation and everyone is entitled to that. I am no exhaust expert and I don't make that claim. (Message edited by Curve_carver on February 17, 2011) | ||
| Kalali |
"I am no exhaust expert and I don't make that claim" I am no expert either but with all due respect your explanation referring to the notion of "cushion" makes absolutely no sense. I was told by an expert that the exhaust/header design had to do more with optimizing the torque across the engine operating speed by managing the engine stroke pulses (particularly the down/exhaust stroke) accomplished by varying the length of the headers and the amount of back pressure. | ||
| Hootowl |
"Cushioning" is something I've not heard of. I thought it was all about resonance and standing waves. | ||
| Blake |
>>> I hope you can understand that Blake. I can understand what you are saying, but it sounds pretty far out to me. That's the first time I've ever heard that explanation for "backpressure" and I thought I'd heard them all. | ||
| Curve_carver |
I have over 25,000 on my bike and I think i know what it likes blake. I have the right to say the bike is clunky because I OWN ONE. You cant relate an xb to the 1125. On top of that I've had all three production systems and they all had the same characteristics. And when the packing went the clunking got worse. (Message edited by Curve_carver on February 17, 2011) | ||
| Curve_carver |
3 peak hp and an increase in hp across the board are two different things. We never will know if this statement will hold up because the pipe was never tested. I also believe the stock pipe wasn't tested on purpose so that it wouldn't effect the sales of pipes. Once again I'm entitled to my own opinion. (Message edited by Curve_carver on February 17, 2011) | ||
| Crowley |
I don't think we're talking about the same thing here, Gentlemen. It's going to get interesting if we are  | ||
| Froggy |
Interesting, I have two 1125's, one with stock pipe, other with a KEDA pipe, both running the same Erik Buell Racing tune, and I've never once observed this cushioning or clanking. | ||
| Curve_carver |
Idk maybe it was the Hmf tune I had? | ||
| Milleniumx1 |
I'll skip the cushioning / clunking discussion  But to Kidder's original question - Yes, the pump gas / stock ECM from Erik's shop is easily the best $250 that I've ever spent on a bike. Night and day difference - Plug and play, smile all the way! Mike | ||
| Daggar |
Yup. Stock exhaust and K&N here, with the Erik Buell Racing pump gas ECM. Best $250 I've spent on just about anything. | ||
| Mike1125r |
This is a dyno sheet from my stock 09 1125r. I'm running the stock exhaust and Ebr re flashed ecm. Ebr put a race map for pump gas, 93 octane.  | ||
| Mountainstorm |
i ran the stock can and a Race ECM for a while/ It is better. | ||
| Kalali |
"And when the packing went the clunking got worse." On my X1, my experience with or without packing was the exhaust got a bit louder with the packing removed. There was also a very subtle drop in the low-end torque without the packing. May be the extra noise appeared to be more clunking. Ironically in Tubers there is so much "normal clunking" going on that the louder the exhaust the less clunking you hear... | ||
| D_adams |
Backpressure.... Ok.... I think there was a guy over in europe that did some extensive testing on the stock pipe to find out exactly _how_ restrictive it really was. Maybe 1/2 of a psi or about 15 inches of WC was the number I recall seeing, which isn't a lot. I'm not sure why this keeps coming up, but "backpressure" in a 4 stroke engine isn't a good thing. When you lose the packing in an exhaust, yes, it will probably lose some power. The reason why is because the tuned length and/or shape/volume of the pipe has been drastically changed. The pipe was probably designed for a specific size tube through the center and suddenly, instead of a 2" pipe, now it's a 5" oval hollow shell. A little research goes a long way. Google is your friend, search for "exhaust back pressure" and you will find a lot of info out there. | ||
| Buellmojo |
Mike1125r, That is some great information there, since the American Sport Bike test did not include the stock exhaust with a tune in the comparison of the available slip-ons. I know Dyno results vary, but your charts certainly rival all of the aftermarket exhausts that were tested, as I expected the stock exhaust would, with a good or equal tune. | ||
| Mike1125r |
I have an 08 and 09 1125r. I ran them stock, full race exhaust, fully tuned. I will say for having the stock exhaust the bike actually feels pretty fast. You will definitely make more hp and tq through out the whole power band with the Erik Buell Racing full race exhaust. Expect 146 peak and around 83 tq. From my experience with this bike you don't need back pressure just a good design pipe and professional tune.Before my 08 was a full race bike I ran the Ebr pipe and race ecm on the Str..t, there is no back pressure in that pipe. The bike was very smooth at all speeds and great throttle response. The stock cal was made to be in compliance with emissions and runs very choppy at low speeds. Once you get the correct fuel and spark in the bike that all changes. | ||
| D_adams |
I guess the better thing to really look at is the performance gain from baseline. If you don't have a base run to compare to, the data presented is useless. The average hp/tq output is about 122/70. At 140 hp, that equates to a 15% gain at redline. Pretty impressive if it's accurate, but if your initial base dyno run starts at 130, then it's not as big of a gain at only 8%. It's certainly possible with corrected tuning, but I would be more inclined to believe the dyno was a little optimistic. Buell's full race pipe at only 146, a stock pipe on the same bike at 140? Maybe, but not likely. If that were true, then the full race system (at $1800 + the ECM) nets you a whopping 4% gain over stock. I kinda doubt it. The stuff I do makes an average gain of 13% over stock. I KNOW Buell's race pipe makes more power, but I don't see the stock pipe getting that close. | ||
| Mike1125r |
Dean I've been on this dyno before and it is conservative. I ran my race bike with the buell race pipe and ecm on the same dyno when it was stock wheel base and made 146hp on the same dyno.Dean your not factoring I have a race map not a street map in my 09. It was hard to believe myself but those are numbers. I don't give misleading information! | ||
| D_adams |
Well, if you did them back to back on the same dyno, then it is what it is. What did it make in totally stock trim? |
