Hi,

I have a stock exhaust but I just learnt that if I had to get a Yoshimura RS-3 slip on for my CBR, I would also have to do a jet conversion stage 1 which is probably another few hundred bucks of work. Has anyone had to do that as well? Thanks for letting me know.

SFRIDER

 

Anyone out there? Really need to know if the mech is taking me for a 'ride'. Thanks.

 

If he jets it correctly the first time, it's about a two hour job.

 

Thank you Rickracer! I'll check around for someone thats an expert and would give me a good estimate on the labor.

 

I doubt it's reallynecessary to re-jet, but it shouldn't hurt it at all, and if you add a high flow filter, it should help even more.

 

You would want to rejet to make sure you dont have fuel issues. You are changing the amount of air going out so it is the best idea to do it.

 

I put a Yoshimura R&D slip-on on mine and it runs fine as is...no rejetting. Flashman's right about changing the amount of air going out, though, and the back-pressure is going to be different too. I'd just put it on and see how it runs. If the flow is anywhere close to same as with a stock exhaust, then you're good to go. If not...then the bike will tell you that you need to rejet it.

 

[sm=exactly.gif] i agree with eweppley

 

This is usually not as simple as a yes or a no, if for example your bike is currently running a bit to rich the installing the slip on will lean the mixture out a bit and the bike will run better. If the A/F ration is bang on the money then the bike may run fine but you will not get the full power from the motor. Then if the motor is running a bit lean as it is than you will almost surely need to play with the carbs. Installing a slip on is a "minor" change and any adjustments to the carbs will be "minor" as well.

But to sum thing up I am quite sure you will not need to do any changes to the carbs, if the carbs are stock then they aremost likelya bit to rich.

 

Does a Yoshimura slip on require jet conversion? NO.

I have a mostly stock 93 F2 with a yoshi slip on and no jetting.... runs great.