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-   -   yamaha fzs 1000 with or without exup??? (http://www.motorcycle.com/forum/motorcycle-mods-maintenance/12687-yamaha-fzs-1000-without-exup.html)

lari 07-29-2009 09:51 AM

yamaha fzs 1000 with or without exup???
 
hi guys i´m finding an answer about a lil´ modification on a fzs 1000. i want to change the exhaust (not complete) just a slip on but i think that i may do some modification in mapping..is that so?
i saw in a r6 a gytr exhaust that eliminates the exup...what i lost & win??
sorry about my mohican-english!!8)

Kenneth_Moore 07-29-2009 09:58 AM

exup "tunes" the exhaust for better low and midrange power while retaining the top-end; usually incompatible goals. If you tear it out to put in an aftermarket exhaust, you'll get a lot of high end track power, but your bike will suck on the street.

Talk to the exhaust dealers tech people and/or the exhaust manufacturers tech support. They'll tell you which slips ons are ok w/o remapping and which aren't.

acecycleins 07-29-2009 10:25 AM

Yamaha has been building EXUP exhaust for bike for 20 years. The valve builds back pressure, which builds power. Some companies adapt modern exhaust without it becaue they know that re-mapping isn't difficult. I believe you don't mess with technology that is proven. I would buy a "can" designed for the EXUP before I consider removing it.

lari 07-29-2009 10:44 AM

that´s right!!!
 
ok!!! i share your opinion!!! but is there some manufacturer who sale a canister with exup on it?? cause i don´t really like the oem!!
thank´s for answer that fast!

acecycleins 07-29-2009 10:47 AM

Quote:

Originally Posted by lari (Post 220178)
ok!!! i share your opinion!!! but is there some manufacturer who sale a canister with exup on it?? cause i don´t really like the oem!!
thank´s for answer that fast!

The valve in most of the units is in the mid-pipe. I'd check Leo Vince and Yoshimura first. Then I'd check out White Bros.

Kenneth_Moore 07-29-2009 11:15 AM

Quote:

Originally Posted by acecycleins (Post 220180)
I'd check out White Bros.

You got something against Black Brothers?

Kill Whitey!

acecycleins 07-29-2009 12:29 PM

Quote:

Originally Posted by Kenneth_Moore (Post 220184)
You got something against Black Brothers?

Kill Whitey!

it's the high pitch whaling that gets to me- lol!

The_AirHawk 07-29-2009 12:36 PM

Quote:

Originally Posted by acecycleins (Post 220200)
it's the high pitch whaling that gets to me- lol!

Ah, those crazy Japanese and their Whaling Vessels!

When will they EVER learn - you just can't flush a Blubbercake........


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