Actually that makes sense. If you try and run with the air box using the stock exhaust it's gonna sound louder because it's trying to pull in more than it can get rid of.........or something like that. You need to match the air out with the air in.

 

Well... Like Kawi Wawi said, it sounds more "clappy" without the lid. I think that the airbox acts like an acoustic resonance chamber which adds to the .db level. No big deal to me since I wear earplugs when I ride anyway. The reason I took mine off was to fine tune the A/F mixture without having to mess with jetting or the needle again. It's pretty much spot on now with the lid off. I don't mind the sound at all.

I had a 1979 TT500 that had just a foam 'sock' that was hose clamped right onto the carb throat. With no airbox around it, it wasn't as noisy as the KLX with the airbox.

My goal is to have the bike run well, the sound is secondary to the performance. (with that being said, I do prefer a quieter bike. My rides take me by livestock sometimes and I don't want to cause problems with the local ranchers, etc.

Willum
TC

edited to fix KW's name.

 

I REMOVED THE SNORKLE THEN USED HALF BY HALF STICK ON WEATHER STRIPPING AND MAKE A LIP AROUND THE HOLE. IT STOPS THE DIRT THAT ACCUMULATES ON THE LID FROM FALLING IN AND DEFLECTS WATER IN SMALL AMOUNTS. BY REMOVING THE SNORLKLE AND DRILLING THE EXHAUST IT MADE ABOUT A HALF GEAR DIFFERENCE IN WHAT I TAKES TO CLIMB A HILL I USE TO JUDGE THE CHANGES I MAKE. AS FOR NOISE, WHO CARES!

 

NOISE FROM THE AIR BOX NOT THE EXHAUST. WE HAVE TO BE GOOD EXAMPLES FOR THE SPORT.

 

Well, I guess this thread just serves to remind all of us that nobody's eardrum was created quite the same. All of these assessments of the noise, mine included, are about as subjective as it comes. [8D]

 

me? i personally love when i go by a car/van with the window open, when i am in the fast lane, and then we get to a light and i have to pass them again, i like to see them holding thier ears because the bike is so loud at 8k rpm's [sm=badbadbad.gif] but thats just me, i like the sound of a loud exhaust, on anything what can i say, v8', v10's, crotch rockets, dirt bikes, quads, anything, and in my opinion, if you dont your not a true gear head...

 

That sure does sound perfect. Anywhere from about 130 to 135 will dial you in pretty good. That probably is how I'll jet my CVK until I switch to the pumper.

 

i was messin with my bike one sunday in the backyard... after i first had gotten it... i pulled the seat and airbox lid and fired it up to see what it sounded like and if it made any diff in performance.. i almost **** and quickly shut it off all the while lookin for any guns pokin outta neighbors windows [sm=guilty.gif]

anyways... that was stock exhaust.. when i get the pipe in a month or so itll be sitting till spring as riding time is past now.. but when it rolls out in the spring it'll be minus the airbox lid. i think it may sound louder with a quite exhaust (stock or choked aftermarket pipe) as the box noise will overpower what your hearin from the pipe.. i dont plan on runnin any quiet cores etc so it shouldnt be a prob. [sm=yikesomg.gif]

 

ol guy, check ur pm.

 

hey deej do you have the N1TC needle? if so what clip postion are you on... over winter im probably gonna jet it to run with the lid off, so ill order a 132 main, and my needle is on the 3rd clip position, and i already have the 40 pilot in....