| Author | Message | ||
     Bott |
Now that I have seen the exhaust shootout , my D&D (which was removed for a warranty issue) will NOT be going back on. The noise/power gain ratio is horrible. The D&D is earshattering loud, and made the least power. Rode a friend's bike with an FMF and it was half the volume of mine. Hope Santa brings me the FMF along with all the other goodies I asked him (her) for... | ||
| Jasbiz66 |
Mac_inger, let me know what you want for that FMF....... | ||
| Freezerburn840 |
The other thing for me was the repacking. I think Remus, D&D and Torque Hammer are the only one's that dont need repacking. Anyone have experience with the Remus or Torque Hammer? | ||
| T_man |
My HPE race exhaust is quite staggering in Db out-put but also in power gain. Alas there is no way I'd trade back to that oil barge-esque stocker.. I wish somebody would make a proper length (ie. RC51, TL1000, RSV etc) dual exhaust for the bike. Honestly I can live with the couple pounds wieght penalty (probably would still be lighter than stock). | ||
| Mac_inger |
Jasbiz,..i think ill keep it and switch between stock and the FMF depending on how long the ride. thanks for the offer though | ||
| Crabby |
How much did the HPE set you back? and did you need a custom flash for it? | ||
| Thefleshrocket |
Blower1, your GSX sure looks turbocharged to me, not supercharged, at least in the pic you posted. It looks like there's a turbo right off of the header and the pipe running along the side to the carbs is the compressed air from the turbo. A few more pics, please, if I'm wrong. T-man, there's a guy on Buelletinboard that created a standard style dual mount exhaust for his 1125. It looks pretty good IMO but has some room for improvement. Producing a system like that for resale would probably be really expensive--I'd guess $1500-$2000 for a slip on system. I have a Barkers with the least effective quiet core in it and the stock ECM (planning on buying an EB R ECM for my birthday in February) and rideability is pretty darn good with it. It could surely be smoother and run a bit cooler, but it's definitely not difficult to ride if you've got a modicum of throttle control. It is pretty loud even with the quiet core, and not the prettiest exhaust for sure (the D_adams pipes are the nicest looking IMO) but it's cheap and does sound pretty good. | ||
| D_adams |
Freezerburn840 -- I'm kinda thinking the D&D does require repacking. Unless I'm mistaken (yep, it happens sometimes) the end cap is riveted or bolted on to facilitate that. | ||
| S21125r |
Flesh It's technically called turbo supercharging. But I do see a drive belt coming off the crank so either way it's supercharged. Just sayin... (Message edited by s21125r on November 29, 2010) | ||
| T_man |
Honestly if the stocker didn't weigh a truckload and look like a truckload of s&*# and sound like a mouse farting maybe It wouldn't be hanging on the wall (marvelous engineering included). Rocket: Unfortunately your probably right about the price of a two-into-two setup, shame because the effect of two fully packed silencers would net a nice deep more muffled bark methinks. Crabby: The HPE race (iconel fab not SS) set me back 1K all in. I do have a E-B-R Ecm which I simply asked them to send the most suitable tune programmed into it. One thing is for sure - the HPE certainly ADD'S power over the stocker. | ||
| White79bu |
I love my Drummer. I am still running the stock ecm and the bike runs awesome. I smile like a kid every day when I start it up and head to work. | ||
| Father_of_an_era |
The only benefit that I see to the stocker is the way it fills in the void under the engine. Other than that, its a dawg in my opinion. And, IMO it's definitely the ugliest part of the bike. My KEDA is much, much better all the way around. | ||
| Curve_carver |
I was deciding on a keda but all the designs looks like a small shiny crushed trash can with two toilet paper tubes dangling ready to fall out. IMHO All undermount exhausts are ugly as sin.The stock exhaust looks from far away like a fairing and not a shiny trash can being dragged ill give it that. Is it that bad that we resorted to mounting car mufflers underneath our bikes? Put a r1 undermount 07 design on a 1125 and it'll look badazz!! | ||
| Blower1 |
@ Thefleshrocket It´s supercharged and fuel injected. One throttle body in between the supercharger and the plenum. Here is the whole story http://www.thegsresources.com/_forum/showthread.ph p?t=94468 And here are the latest pics from the new exhaust I´m building for the GSX:   | ||
| D_adams |
I'm starting to get the impression that you're just trying to stir the pot.
On this, I'll kindly point you to American Sport Bike and the exhaust shootout. I do believe that you sir, are incorrect. I'm not sure where you got the impression that more power with better fueling from an Erik Buell Racing ecm makes the bike run worse, but you've been doing something wrong to get that impression.
This is starting to sound like you're advertising for someone that had some specific ideas on how the exhaust business should be done. Wonder who that might be?
Ahhh, it's starting to become clear. Been down this road once before. I recall being told something along the lines of "You're doing it all wrong and your ideas will NEVER work, my way is better".
Awww, damnit, now I can't sell one to you. You've hurt my feelings over the interwebz. Tell ya what, build your R1 system and bring it to the next exhaust shootout, we'll see how it does for performance. My stuff has never been about what it looks like. I wanted a very specific sound and as much performance as I could get. Function over form. It may look like toilet paper tubes, but it puts down as much or more power than ANY slip-on out there. If you've got something that can do better, bring it. (Message edited by D_adams on November 30, 2010) | ||
| Curve_carver |
I really don't understand your point of views?I was just commenting on someone that spoke about having it hacked? With that being said I gave my solution eBay turnouts . I dont even think they are available right now .As far as performance I do believe ebr Ecms make power with your pipe. I have a ebr ecm and it really woke the bike up.There's no argument about that. < I'm sorry you feel the need to interrogate me. I just think that the smoothness of the bike and many qualities are lost. Some have agreed. I understand how you must of felt when someone posted something good about the stock exhaust and you felt it was necessary to ruin a perfectly good thread by throwing your exhaust designs around . I think a undertail design would of made a real difference in sound and performace. I agree it would of wieghed more . Please excuse yourself from your nonsense dean. I started a thread about the qualities of a stock exhaust and now I'm being interrogated. Get for real !! | ||
| D_adams |
My first post in this thread was just a pic and a link. http://www.badweatherbikers.com/cgibin/discus/show .cgi?tpc=290431&post=1957411#POST1957411 I said nothing else. No interrogations at that point from me. My next post was in response to this post by Milleniumx1 mentioning "bang for the buck" and performance in general. Just noting the fact that the top performers _did_ show some rather impressive gains. Please note, I did not mention MY products only, I included both the barker & drummer in that "top performer" category. Again, no interrogation. http://www.badweatherbikers.com/cgibin/discus/show .cgi?tpc=290431&post=1957438#POST1957438 The next post was 2 video clips, no statements or interrogations. Clk92vette mentioned several systems, the videos were just to provide samples of different sound levels of what I can do. Sorry, that was blatant advertising on my part.
Ok, that's the one that got me. What did I do to you that made you think of toilet paper rolls? I figured, meh, maybe you had a bad day? Someone pooped in your wheaties today? I don't really call what I did interrogation. I just pointed out the fact that you appear to be trolling. All the negativity about the aftermarket exhaust systems, I don't get it. I don't recall EVER saying the stock exhaust was bad, just that the carbon output to the rear rotor wasn't a good thing. Having soot all over the rear rotor and wheel sucks, so I came up with an alternative. No, I wasn't the first to try it, but I did come up with a reasonable solution to the problem. Nobody is forcing you or anyone else to buy it either, it's just an option that's available. I'm still a little lost on the "interrogation" thing. Exactly -where- did I interrogate you? Sure, I'm calling you out as a malcontented troll, but I didn't grill you with 20 questions. | ||
| Dannybuell |
Cabin fever here in oregon. 'rain' IS a four letter word! I want to have my cake and eat it too. The Barker and KEDA RT-3... designs are too track/pass through oriented, noisy. The Barker quiet core and others have similar tuning options for the owners discretion to quiet them down. I too thought there was some jerkiness with my CRs stock muffler barker tune ECM. I stiffened up the rear preload and it smoothed right out. When Keda makes quiet core | ||
| D_adams |
Dannybuell -- Might have something for that. Initial testing shows a possible 5db drop, but I need to get out and run it some on the highway. I've only done short tests in the garage so far. 95 db at idle, assuming this meter is somewhat accurate. | ||
| Dannybuell |
from base/before db to post/after db killer would be great. | ||
| D_adams |
I will be doing some testing and try to get some good measurements later. | ||
| Curve_carver |
Finally some made a conventional side mount exhaust. Congratulations Erik !! I for one will be looking to see what the price of your system will run followed by the db ratings. One thing I did notice at startup today on my bike since I installed the stock exhaust. All the rattling has disappeared . The lack of backpressure causes the gears in the engine to rattle away more. Another great quality that can't be beat by the stock exhaust. | ||
| Albert666 |
if buells come with underslung exhausts, then thats what space we have to play with in my view, anyone can run two pipes up the side of the swing arm like every other sports bike, akrapovic do something like this for the ktm rc8, two silencers, one each side of the swingarm, it looks just like a gsxr does, dissapointing really, the challenge is something that will fit in the intended space with performance and a reasonable db level. | ||
| Rkc00 |
MY first post in this thread was just a pic and a link. And a nice picture at that. Glad it was my Ride | ||
| Bott |
OK question for the exhaust gurus. What do you people think is the cause for the D&D being so poor in performance gains? I am guessing that it is just TOO open and too straight, with little to none as far as backpressure. The "baffle" seems to basically do very little, and is so smooth and straight that these are pretty much just a straight pipe that has an insignificant noise reduction. The noise to performance ratio is poor. At least I have a nice midpipe that could probably be used at some point.... | ||
| D_adams |
PM sent. Back pressure has nothing to do with the D&D performance. The RT-3 is short, straight through and wide open, yet it made huge power over stock. (Message edited by D_adams on November 30, 2010) | ||
| Skntpig |
I had the FMF E_B_R tune and bolted up an RT-3. Couldn't be smoother low, midrange or top end. Can't imagine going back to stock. Just sayin' | ||
| Crabby |
T-Man The cheepest iv seen the HPE is like 1200... can you divulge where you got it at 1k? | ||
| S21125r |
I see all these reference to back pressure as good thing - I'm not sure that is correct thinking guys. Anything that restricts the flow of exhaust out of the engine robs horsepower - the cylinder can't completely empty from it's exhaust cycle and the inertial pre-charging during valve overlap is reduced. Granted you cant just attach a 3" drain pipe to the head either as it won't have enough velocity to create the inertia charging. Other engine parameters can affect how an engine behaves with exhaust A vs exhaust B at a given RPM, but generally speaking the area under the curve will be larger with less back pressure for a given exhaust velocity. The trick to it all is to reduce back pressure without loosing velocity. If your engine is running clunkier with a free flowing exhaust then chances are your fueling doesn't match what the engine needs. Either that or you have scabbed together exhaust system that wasn't designed with the proper tune parameters. BTW - Do any of you back pressure believers think it's a coincidence that the stock exhaust is both quiet and relatively free flowing? Not me. I think Erik and elves had a target dB level and worked backwards to make it as free flowing as possible without breaking the bank or sacrificing the trilogy. I'm sure if packaging space or cost (or dB level) were not a concern, it would have been even freer breathing. If your still not buying in the "less back pressure is good" then answer this question... Have you ever seen a top fuel or sprint cup team use a muffler? | ||
| Skntpig |
It depends on what you are tuning for. I shrunk the ports in my S1 lightning heads because I wanted monster Low and Midrange and knew I was going to sacrifice top end. I don't take it to the track. High velocity intake with anti-reversion Dport shaped exhaust side. My 2 into 1 KT pipe works great with the small baffle. Stock cams and it pulls your arms out on the street. -Truly violent from idle to 5K so nobody rides. Dean's pipes work well with a stock 1125 with stock headpipes (and correct fueling). If you were tuning for more top end the stock pipes would be restrictive due to diameter (go E_B_R). They are loud but worth it for ME and the way I ride the cr. |
