I've been away for a week and am just catching up with posts. In reading this thread, it seems to me like we need a definitive topic about exhausts, white spacer, needle, and jetting options. A bit of a primer if you will. We get lots of newbies asking questions about one or all of these and it would be great to have a topic to use as reference. Anyone want to take a stab at it?
I would but I know nothing about it yet other than what I've read... I was thinking we could list the various options, along with descriptions, costs, thoughts, helpful hints. Something like:
Description of Stock Exhaust Setup: Commentary on what it is (components); why its lean etc...
Modifications: Commentary on various modifications that can be made to stock exhaust, followed by detailed info on each.
- Idle screw-- directions on what to do and why it matters
- White spacer -- directions on what to do and why it matters
- Needle -- directions on what to do and why it matters
Jetting options:Commentary on reasons to change jetting, followed by details on each jetting option
- Mikuni jets -- cheapest option; comes in x,y,z sizes; how to install
- Dynojet -- easy to use but expensive; not worth the cost unless...; list sizes; explain why different than nMikuni sizes
- Dial-a-jet -- commentary
Exhaust Options (listed in order of approx cost):Commentary on reasons to change exhaust, followed by details on each exhaust option
- MAC -- approx $xx; Canadian-made; least expensive option; some concerns around longevity; sounds like...
- Jardine -- ....
- SuperTrapp -- ...
- Raask -- ...
What do you think? Anyone willing to tackle it? If not, I will take a stab at compiling the info already on the board but you guys will have to correct it and promise not to laugh.

If you want me to do it, let me know if anything should be added to the lists above.