Routy wrote on 09/05/11 at 06:23:29:Ok, at first you only noticed a little less low end torque, not bad, but was it for real ? From vast experience, I know that if you change the exhaust sound, it can change the mindset about performance.
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BTW, if you were capable of changing that muffler w/o much problem, you were more than capable of changing a main jet, and maybe even doing a midrange spacer mod if needed. The tech crew here could have led you thru it.
i have to agree with both of these statements in some respect. i know when i ride my dad's bone stoke savage (refuses to even touch the carb tuning screw) vs. mine with (among
many other things) a louder muffler, mine feels more sluggish. now, i know that my jetting may not be perfect, but i can say with some certainty that i can put down just as much or more power (read: burnouts, wheelies, quicker off the line, and general hooning around) than stock. yeah, thats not too scientific, but wtf. the
feeling of less power is only because mine is louder and "complains" more under load. its a feeling, and even less scientific.
Part 2: if you had the wherewithal to do research on this site about muffler modding, proper muffler alternatives, and then had the balls to go through with it, then you are definitely capable of jetting your own carb, especially when the alternative is $250 and having it done by someone who knows less about your bike than you do. not trying to criticize, but hindsight is always 20/20. just mention a muffler mod on the forum and you get 45 educated suggestions from the great people here.
Ok, so cousin Jethro down at Ed & Jed's Moto-sickle Shop probably threw some smaller jets in it thinking that the flame was from
too much fuel. if thats the case, you are way too lean, which causes it to run hotter and can do some nasty sh!t to your valves and other parts that, you know, make it run. lean might make the pipe glow like that. an extremely lean main could also starve the bike of fuel at high speed and cause it to shut off.
1st things 1st, find out what jets are in it and report back to the experts
check the plug
is the pipe bluing?
if the petcock is the problem (probably not, but...), test it or try running it on prime on the highway to allow enough fuel.
limit your riding for now
i personally think you should sell the "glowing pipe and flameshooter" mod
best of luck,
<- this guy
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