your muzzy will discolor no matter what, by removing/not removingthe smog crap you just get to choose how dark/light you want your discoloration. it's common for the muzzy to discolor since it's stainless. but, removal of that crap will help your decel popping and help the exhaust run cooler.

 

doesnt matter now bro.... BG doesnt ceramic coat thiers anymore, so they are all stainless, and you will get the discoloration.... but i got the ceramic coated one

 

yeah, i saw that a couple months ago. that must mean that pipes like yours is worth like double what it cost when you bought it. don't you think?

 

wanna buy it?

 

.........oh, you mean the pipe?

 

I'm pretty skeptical of this unless you have a dyno run to back that up. Every klx that has been dyno'd here shows the torque starting to drop off at around 7 or 8K with max HP around 8 to 8.5K. I think the only thing that is going to have an appreciable affect on that, assuming the bike is jetted well to begin with, is a different CAM profile, but you didn't have that if I remember correctly.

While I don't doubt that your bike might have performed poorly with the lid-off vs just pulling or enlarging the snorkel hole, I think you are over generalizing on the reason why. I suspect the reason for yours behaved the way it did is simply because of your jetting. If you jetted a bit richer, it would run better with the lid off (more air). I don't think that somehow the airflow is bad or more turbulent or whatever that might somehow cause the bike to run poorly with the lid off vs enlarging the snorkel hole. I think you just "tuned" the lid to your jetting, as oppose to the other way around. There are plenty of examples of bikes running fantastic with the lid off.

 

you're absolutely correct. When I said "wouldn't stop pulling until 10 grand" I think I should've used the word climbed to 10 grand with no hesitation. I honestly do not know when the powertailed off but I do know it would hit redline instantly with no bogging or stumbling.
As far as the airbox lid, yes I did tune it for the enlarged hole I guess. By increasing the main jet and maybe the pilot it probably would've run better with the lid completely removed. I just liked the extra security of having a little covering over my engine's mouth. Points well taken.

 

I went as high as a 130 Keihin main and had a full throttle surge with the lid off. I've backed down to a 128, and doubled the airbox opening size. If anything its a tad rich based on the blackening of the fender that I was getting. It runs pretty well though, we'll see how it is when I get back out on the road and can really wring it out.