sansnombre Posted August 15, 2015 Share Posted August 15, 2015 Just installed my new exhaust . . . after making it the appropriate color. I think it looks much better than the stock polish. A note on initial impression - it was a little louder than I wanted, and also a little sharp/shrill. It sounded good, just not a throaty as I had expected. It was also a little bubbly and poppy on closed throttle/higher rpm transition - pretty standard stuff for this type of change. Knowing that the removal of the O2 sensor would richen up the closed throttle operation, I removed it (it was on initially after the install) and I also removed the snorkel (more on that later). Change was dramatic. No popping or bubbles, and much throatier sound. Blipped the throttle a few times and was very impressed with the change in sound. It almost sounded too rich, but that was impossible. Took it for a quick spin, and it's very clean. I had it pulling at 2k in 3rd gear at low speed and it accelerated well with no hesitation or lurching. Smooth, clean, throaty sounds too. Wow, that was a good move. The snorkel is a profound flow impairment! Not only does it impart the restrictions of its external length and smaller diameter, but it also goes almost all the way down to the bottom surface of the air filter, providing another orifice that the flow has to maneuver around! Take a look at the bottom 1/2" of your filter. See how it's darker and dirtier than the rest of the filter? That's because of the snorkel forcing all the flow down at the bottom of the filter. Yamaha must have had to do this to make emissions numbers cause it's a severe limiter on flow. Remove it if you can. My only concern is the relatively sharp corners of the main intake now. It would help to have a flow shaper (envision a velocity stack) of some sort there, esp for high RPM flow. I'm thinking of designing one if I have time. Anyway, I pulled it off and am having no problems - I think because I also removed the O2 sensor. Next up is a K&N and the EJK kit, and I'll see what that does. So far, so good. If there's interest, I'll let you know how it goes on round two. Cheers Link to comment Share on other sites More sharing options...
Premium Member noltz Posted August 15, 2015 Premium Member Share Posted August 15, 2015 No images D: Link to comment Share on other sites More sharing options...
RobMoore Posted August 15, 2015 Share Posted August 15, 2015 What did you paint it with? And your pics aren't visible. Link to comment Share on other sites More sharing options...
jerryv Posted August 15, 2015 Share Posted August 15, 2015 What else? ... invisible paint What did you paint it with? And your pics aren't visible. Link to comment Share on other sites More sharing options...
Global Moderator sorkyah Posted August 15, 2015 Global Moderator Share Posted August 15, 2015 Look into the DNA intake kit. Air filter and intake lid... looks similar to a velocity stack ATGATT... ATTATT, two acronyms I live by. Link to comment Share on other sites More sharing options...
RobMoore Posted August 15, 2015 Share Posted August 15, 2015 I would only do that if you can somehow seal the front edge of the seat where it meets the tank. Water will drip right through there into your air box if you remove the snorkel. Link to comment Share on other sites More sharing options...
sansnombre Posted August 15, 2015 Author Share Posted August 15, 2015 Odd. They're showing up on my side. Let me try another method. Link to comment Share on other sites More sharing options...
sansnombre Posted August 15, 2015 Author Share Posted August 15, 2015 OK. New pix. Let me know if they don't show. Link to comment Share on other sites More sharing options...
RobMoore Posted August 15, 2015 Share Posted August 15, 2015 Good now. Is that flat black engine spray paint? Link to comment Share on other sites More sharing options...
sansnombre Posted August 15, 2015 Author Share Posted August 15, 2015 Actually "Header Paint" from The Pep Boys, and flat black. Link to comment Share on other sites More sharing options...
Premium Member username Posted August 16, 2015 Premium Member Share Posted August 16, 2015 That looks really nice! What a great idea. Now you just gotta paint those silver guards on the sides and you'd have yourself an even more sexier motorbicycle! Link to comment Share on other sites More sharing options...
RobMoore Posted August 16, 2015 Share Posted August 16, 2015 And the passenger pegs while you're at it. Link to comment Share on other sites More sharing options...
leonnerd Posted August 16, 2015 Share Posted August 16, 2015 Looks beautiful. Can you post the exhaust sound too? Link to comment Share on other sites More sharing options...
jerryv Posted August 16, 2015 Share Posted August 16, 2015 I can see them now. Looks great, I like it at least. Wonder if it will wear off easily. Odd. They're showing up on my side. Let me try another method. Link to comment Share on other sites More sharing options...
Beemer Posted August 16, 2015 Share Posted August 16, 2015 That looks nice! I don't know about the Yosh pipe but with an Akra carbon, K&N filter and EJK it's recommended you keep the 02 sensor in and disconnect the wire which I did with mine and boy, what a difference! You're going to love it! With that snorkel removed it howls when you crack open that throttle and the difference in performance, to me anyway, is significant. Beemer Link to comment Share on other sites More sharing options...
Beemer Posted August 16, 2015 Share Posted August 16, 2015 I would only do that if you can somehow seal the front edge of the seat where it meets the tank. Water will drip right through there into your air box if you remove the snorkel. I can visualize that happening, it makes good sense but thus far, even while riding in the rain several times, no problems with mine un-snorkeled. Maybe I'm just lucky. If my luck changes I'll remember to do that or maybe just do it anyway as a precaution. Thanks for the tip! Beemer Link to comment Share on other sites More sharing options...
RobMoore Posted August 16, 2015 Share Posted August 16, 2015 I compromised by cutting the bottom of the snorkel off and reattaching it, so it still has the hood for protection, but doesn't have the tube extending down into the air box. Link to comment Share on other sites More sharing options...
aeisan Posted August 16, 2015 Share Posted August 16, 2015 I would only do that if you can somehow seal the front edge of the seat where it meets the tank. Water will drip right through there into your air box if you remove the snorkel. I can visualize that happening, it makes good sense but thus far, even while riding in the rain several times, no problems with mine un-snorkeled. Maybe I'm just lucky. If my luck changes I'll remember to do that or maybe just do it anyway as a precaution. Thanks for the tip!I've been caught is some nasty downpours and checked the air filter out when I got home, out of paranoia. Dry as a bone even with the snorkel out. Life is good on 2 wheels! Link to comment Share on other sites More sharing options...
armourbl Posted September 5, 2015 Share Posted September 5, 2015 How is the paint holding up over time? ben Link to comment Share on other sites More sharing options...
sansnombre Posted September 21, 2015 Author Share Posted September 21, 2015 Very well. Since it's header paint, it's actually curing at the temps of the exhaust. And it's more durable now then as painted. Looks great. Link to comment Share on other sites More sharing options...
Premium Member yamahappy74 Posted September 21, 2015 Premium Member Share Posted September 21, 2015 It looks sweet on that color (same as mine). I wonder what it would look like with the stock pipes.... Link to comment Share on other sites More sharing options...
rockfanlee Posted November 25, 2015 Share Posted November 25, 2015 Did you add an EJK fuel controller? Link to comment Share on other sites More sharing options...
sansnombre Posted January 25, 2016 Author Share Posted January 25, 2016 I did. Also removed the snorkel and put in a K&N filter. I would call this setup loud when you're on the pipe. At cruise, it's nice and burley, but open it up, and LOUD!! And I enjoy loud, so, it's friggin' loud. And yes, this is with the db reducer. Link to comment Share on other sites More sharing options...
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