Topic: Big MPG improvement with smaller jets

[camelman]

I've been told a few times that it smells like my 350F is running rich.  I had increased the mains to 80s from the stock 75s to get more power (at the suggestion of a local shop), and it definitely worked.  The bike had noticeably more power, but it really smelled for anyone behind me.  It was also very apparent when I had a passenger on the back who would come away smelling strongly of poorly combusted exhaust (I have a very understanding girlfriend).
So, I decided to go back to the stock jets yesterday, and took it out for a ride today.  The bike takes a little longer to warm up now, and is a little slower overall.  However, the slowness isn't as noticeable after it has warmed up well, and the exhaust is definitely a little quieter.  I rode about 60 miles tonight, so I filled it up when I got home, and came away with just over 50 MPG.  I routinely got around 44 MPG before. 

My take on having the correct jets in place is a little less power, quieter exhaust, better MPG and less smell.  Just an FYI.

Camelman

[DarcyCB400F]

Thanks Camelman! Perhaps your experience is relevant to my being too rich issue? 

http://forums.sohc4.net/index.php?topic=87727.msg990129#msg990129

[Deltarider]

Less is more.
On the 500's for the European market Honda managed to modify carb settings and have equal performance with #78 main jets in stead of #100. Mine at topspeed (over 180 km/h on the Dyno) still runs very rich. In practice I never got more than 170 km/h, but then... I measure 1,96 and weigh 90 kilo's.

[midnightrider]

That's about what I do on stock jets (350F), Camelman.  Where are your needles clips set?   

@Darby
I've been following your thread - you have some good help there!  I'm slowly working on understanding and correcting my slight lean condition, so it's been helpful.