Exhaust Q - Fuelly Forums

Click here to see important news regarding the aCar App

Reply
 
Thread Tools Display Modes
 
Old 10-23-2018, 06:00 AM   #1
Registered Member
 
Join Date: Oct 2018
Posts: 15
Country: United States
Location: Austin, TX
Exhaust Q

Hi all, I've got a 2011 Daytona 675, and I was about to get an aftermarket exhaust system installed.
It is one by 2 Brothers. I was wondering, what kind of gas mileage changes to expect?
__________________

RobOnTesla3 is offline   Reply With Quote
Old 10-23-2018, 07:31 PM   #2
Registered Member
 
Join Date: Mar 2012
Posts: 245
Country: Canada
Location: Halifax
There would be very little change to gas mileage.

For modern sportbikes, just changing the exhaust system without reflashing the ECU won't change much. The bike will sound better and backfire occasionally, but to get your money's worth get the ECU changed to fit the new exhaust system.

My R1 has about 20hp more than stock, and the gas mileage is about 3mpg less than stock.
__________________

__________________
luv2spd is offline   Reply With Quote
Old 10-23-2018, 11:25 PM   #3
Registered Member
 
Join Date: Oct 2018
Posts: 15
Country: United States
Location: Austin, TX
Nice, 20hp is decent increase, sir!
What kind of exhaust do you have on your R1?
RobOnTesla3 is offline   Reply With Quote
Old 10-24-2018, 02:39 PM   #4
Registered Member
 
Join Date: Mar 2012
Posts: 245
Country: Canada
Location: Halifax
Instead of buying a full exhaust system from one manufacturer for $3,000-$5,000; I just bought different parts for cheaper to make it a full system. My titanium headers are stock, but I replaced the catalytic converter with a straight pipe, it is called a "Y" pipe and it's made by MJS. This part was around $270. The GYTR mufflers were installed by the previous owner, but they usually go for $1,000 for both. So this way I have an exhaust system that is third of the cost and 90% as good as a full system.

Reflashing the ECU has a lot of other benefits in addition to more horsepower. The throttle response is smoother and the engine now revs to 14,500rpm. The stock engine map has dips and spikes due to noise and emission regulations, but the ECU tune gets rid of all that (the trade off is worse fuel economy).

If you want your engine to have a lot of horsepower and a good sound, install a K&N or BMC air filter, install a nice exhaust and then flash the ECU to suit those modifications.

Here are some pictures, the black pipe is the catalytic converter. The shiny pipe is the "Y-pipe" and I mailed my black ECU to ECUnleashed where they cut it open and loaded a better map. For a few hundred dollars more, they offered me to install a cruise control and have assigned buttons that I pick for control; but I didn't want to do that. The flash cost me $570.
Attached Thumbnails
Click image for larger version

Name:	DSCN5461.jpg
Views:	157
Size:	126.2 KB
ID:	2579   Click image for larger version

Name:	19222927_10158858147340693_6096250947778505587_o.jpg
Views:	180
Size:	99.5 KB
ID:	2580   Click image for larger version

Name:	Yamaha R1 023.jpg
Views:	155
Size:	252.4 KB
ID:	2581   Click image for larger version

Name:	Pollution 024.jpg
Views:	171
Size:	103.5 KB
ID:	2582  
__________________
luv2spd is offline   Reply With Quote
Old 10-25-2018, 01:09 AM   #5
Registered Member
 
Join Date: Oct 2018
Posts: 15
Country: United States
Location: Austin, TX
That's an impressive build for the impressively low cost, sir!
I have bought my Daytona 675 about 3 months ago, so didn't have a chance to investigate it well enough, to my regret. Yet the muffler is something that has to be replaced, as looks like something burnt out in the original one. So I thought this was a good idea to get a new one installed. I found one by 2 Brothers, and I liked the way it looks, the way it sounds, you know. https://www.motorcycleid.com/images/...structions.pdf Here is the one. Yet, I've read that these mufflers may boost fuel consumption and even can be illegal to use, so I thought people here at Fuelly will tell me something they know about it lol
However, I think that replacing a muffler only is not likely to change anything badly, right? I plan on replacing the whole exhaust, but that's a project for spring, as I have already spent $$ on my bike and got a Tesla Model 3 which is also a kind of vehicle expenses. I am not saying I cannot afford it, just like you said, if there is a way to build an exhaust rather than but an expensive one, I'd rather work on it and save a bit, you see...
RobOnTesla3 is offline   Reply With Quote
Old 10-25-2018, 12:35 PM   #6
Registered Member
 
Join Date: Mar 2012
Posts: 245
Country: Canada
Location: Halifax
You should have no issues with installing the Two Brothers muffler or a full exhaust system. Texas doesn't have emissions testing. Some of the modifications on my bike were done because I saw other people doing the same mod from Houston Texas. Although I'm from Canada, I was reading Sport Rider for 20 years before it got discontinued last year; the magazine had everything on sport bikes and it was from the US.

California is the only state that is strict about people modifying their bikes and cars. If you live there and you want to replace your muffler with an aftermarket one, the aftermarket muffler has to have a tag on it saying that it complies with EPA regulations for noise and it meets the 80 decibel maximum sound. I think only Yoshimura and Akrapovic are the only muffler makers that make mufflers that come with this tag.

You should check out other mufflers as well, the Two Brothers is a nice looking muffler, but Leo Vince and Arrow also makes nice mufflers for this bike. Also, having an integrated tail light will clean up the back end of the bike nicely. Here are some of the pictures that I saved when I was planning on getting a Daytona 675. I ended up getting a Buell Firebolt instead with all the modifications already on the bike.

There are a lot of videos on how to install mufflers to the Daytona 675; so installation should be very simple. The motorcycle community gets away with a lot more than the car community when it comes to modifications, unless you live in California. With all the money you are saving on fuel by driving the Model 3 you can spend it on your bike BikePics is a great website to check out pictures of your bike and see what kind of modifications people have done.
Attached Thumbnails
Click image for larger version

Name:	1.jpg
Views:	167
Size:	164.7 KB
ID:	2583   Click image for larger version

Name:	Triumph 675.1.jpg
Views:	243
Size:	92.5 KB
ID:	2584   Click image for larger version

Name:	Bikelitez, Clear Alternatives, Leo Vince.jpg
Views:	188
Size:	56.7 KB
ID:	2585   Click image for larger version

Name:	Triumph 675 Two Brothers M5.jpg
Views:	149
Size:	85.5 KB
ID:	2586  
Attached Images
 
__________________
luv2spd is offline   Reply With Quote
Old 10-26-2018, 03:55 AM   #7
Registered Member
 
Join Date: Oct 2018
Posts: 15
Country: United States
Location: Austin, TX
I appreciate your help and posting the pictures, sir.
Quote:
Originally Posted by luv2spd View Post
You should have no issues with installing the Two Brothers muffler or a full exhaust system. Texas doesn't have emissions testing. Some of the modifications on my bike were done because I saw other people doing the same mod from Houston Texas.
Yea, I know that all those restrictions and CARB requirements are normally about California with all their 'green' laws and stuff. Texas government is not that strict in terms of getting vehciles modded. I was looking at the description of the Two Brothers muffler online, and saw the text, saying:

This is a Race Only product that is to be used solely for competition. It cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. (here's where I saw it)

I liked the price and liked the fact that this exhaust is carbon fiber. Yet when I saw the note about federal laws, i thought there may be something about this muffler that violates some kind of federal laws. That's why I asked here, thinking that people here know more than me about such kind of mods and stuff. And, I was lucky to talk to you, sir.


Quote:
Originally Posted by luv2spd View Post
You should check out other mufflers as well, the Two Brothers is a nice looking muffler, but Leo Vince and Arrow also makes nice mufflers for this bike.
I will look into the mufflers by these 2 brands tonight, thanks for the recommendation!

I am attaching the pic of my Daytona 675, as well as the pic of that CF muffler by 2 Brothers I was thinking of from the very beginning.
Attached Thumbnails
Click image for larger version

Name:	my Daytona.JPG
Views:	171
Size:	108.0 KB
ID:	2588   Click image for larger version

Name:	2 brothers muffler.JPG
Views:	152
Size:	53.8 KB
ID:	2589  
RobOnTesla3 is offline   Reply With Quote
Old 10-26-2018, 10:11 AM   #8
Registered Member
 
Join Date: Mar 2012
Posts: 245
Country: Canada
Location: Halifax
Nice bike, I remember seeing this color in the showroom a while back, I still remember the gorgeous paint job with the blue flakes; one of the best factory paint jobs I have ever seen.

If you go with the Two Brothers exhaust, the M2 is a smaller pipe than the M5; that's the only difference between the two. The M5 is more oval shaped. I think the M2 looks better, that's what is shown in the picture that you posted.

Good luck with the install and ride safe!
Attached Thumbnails
Click image for larger version

Name:	Urban-Sports-Daytona-675-SE-02.jpg
Views:	186
Size:	79.3 KB
ID:	2591  
__________________
luv2spd is offline   Reply With Quote
Old 10-29-2018, 12:44 AM   #9
Registered Member
 
Join Date: Oct 2018
Posts: 15
Country: United States
Location: Austin, TX
Appreciate all your help! I'm glad I had a chance to chat with you, sir!
__________________

RobOnTesla3 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Fuelly iOS Apps
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 04:42 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.