re-packing exhaust
- Thread starter kennym4
- Start date
the exh can is a shell...perf tube and material inside the can...be it something similar to steel wool or high temp fiber pillow...they do burn up and get loud and you may notice a hp / back pressure drop...if you can take the can off the bike and shake it...that may give you an idea if some part broke off in there...other than that repacking the can is a simple process...unscrew / drill out the fasteners...rewrap it and put new fasteners in it...or send it back to the manufacture and they will repack it.
Boosa Barry
Registered
what's a pair valve? Also do you lose the O2 sensor with a full system exhaust?
cheferman65
Registered
It's part of the emission system,
https://www.hayabusa.org/forum/gen-ii-busa-information/88656-pair-reed-valve-block-off.html
As for full systems, yes, but it depends on the brand.
IG.
Registered
How many miles since the last repacking, or since the exhaust was installed if no repacking was done? If it's more than 15-20k miles, you may need repacking. Also make sure none of the bolts are loose - I am referring to the bolts on the outside holding the front and rear caps. Also, check to see if the holding bracket got loose by any chance.
Could be a loose rivot too.
kennym4
Registered
Nothing would surprise me anymore about what people do. I don't like the sound it makes at low RPM, but LOVE the growl it has above like 7k rpm. Now, the big blue flame that shoots out whenever I chop the throttle too fast sucks !! Don't know why it does that with the pair-valve removed ??
isiahstites
Registered
I just modified mine and a friends today, here are the results. About a two hour job if you take your time. I was going for better looks and more sounds on both of these.
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