Yep he's one of the people that said they used a kepspeed exhaust. I believe
this is the exhaust that is on his bike. it appears to be discontinued - 9 months ago biz said it was out of stock and it still is. There is what I believe to be a successor to that exhaust system on the same site,
here, but again I haven't had any luck being able to select united states as a shipping option on their website.
As much as I know it would be too loud and I wouldn't be able to use a wideband sensor,
this system tingles my jingles. Oh well, I'll make the do with what I have available to me.