Today i removed the lower baffle out of my " performance" chinese exhaust pipe. WOW, nice change. minimal effect on top end, BUT more apparent torque, much more responsive
first exhaust mod completed
- Thread starter yamahonkawazuki
- Start date
Is it a lot louder? The baffle is the piece that after removing the exhaust shell, is still attached to the curved pipe, correct?
yeah, its hte round disc attached to pipe ( with holes in it) welded to endcap. yeah it IS louder. sounds like my ginormous husqvarna chainsaw. not obnoxiously loud, BUT loude enough, where i can hear it, while inside work. ( i warm bike up for a few mins before i leave work every day. IIRC that part is refferred to as the cat. not sure why to be honest, ( unlike any catalytic converter ive ever seen)
has anybody tried drilling an additional hole at the bottom of the baffle beside the existing tube? Well, I did... and it was calculated based on the dimensions of the exhaust port. The header should have a diameter of 22mm and the exhaust tube 16mm at the most. Existing tube only measures 8mm. I could'nt pull out the baffle so I think this is the next best thing to having a tuned pipe. I used a 3/8 brass male coupling from Ace hardware and redrilled the bore to have 8mm, drilled a 10mm hole beside the exsiting exhaust tube, then installed with some muffler glue. Easier mods than removing the baffle and drilling more holes. It's not that loud, but pulls a lot better and definitely more responsive. Four stroking is mininmized if not eliminated.
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Just in case you've the newer style;
http://motorbicycling.com/f13/catalytic-converter-mufflers-15857.html
http://motorbicycling.com/f13/catalytic-converter-mufflers-15857.html
