Yoshimura RS-2 Slip On Review for 2018 EFI KLX250
#31
We gettin closer.. Now drag down your stock silencer and stick that thing on the stock nipple.. That is the only way we will know, absolutely / definitely, how the Yoshi is designed to interact with a header..
You should now have a little improvement in power levels and throttle responses - certainly below 7000 rpm - and a little more power 7k - 9k...
You should now have a little improvement in power levels and throttle responses - certainly below 7000 rpm - and a little more power 7k - 9k...
Last edited by Klxster; 05-06-2018 at 11:22 PM.
#33
Ok, great.. Now that you/we know the Yoshi nipple, please, if you can, get us a measurement on the stock silencer nipple. I am not able to do this..
While I am quite sure it will be the same, we don't know until we know.. Then I can add the Yoshi data to the Exhaust sticky.
While I am quite sure it will be the same, we don't know until we know.. Then I can add the Yoshi data to the Exhaust sticky.
#36
Also, now you can get a FMF slipon for the PB and sell the Yoshi. Results will be a boost in power levels 6.5k rpm to 10.5k rpm, but with a loss of power levels below 6.5k rpm from what you have now..
What you have now is superior power off idle to about 7k RPM - after which your power levels will begin to drop off until, at 9k rpm, you are "done"..
What you have now is superior power off idle to about 7k RPM - after which your power levels will begin to drop off until, at 9k rpm, you are "done"..
#37
Here is the beauty of your current situation:
With the dynojet PCFC, you will be able to quickly adjust your WOT( wide open throttle) fueling curve while on a dyno. This is all that is important.
You can adjust the low and mid ranges yourself to suit your preferences..
Create a relationship with a local dyno shop and you can quickly compare/contrast your exhaust components (if you acquire an FMF slipon for that PowerBomb) as well as lid-on vs lidless power curves..
I am thinking that once fueled correctly with a lidless airbox, your current setup (stock bike + Yoshi ) might be able to do 1st gear power wheelies (with some experimenting on the RPM point before snapping to WOT).. like the wheelie vid below on my signature line..
With the dynojet PCFC, you will be able to quickly adjust your WOT( wide open throttle) fueling curve while on a dyno. This is all that is important.
You can adjust the low and mid ranges yourself to suit your preferences..
Create a relationship with a local dyno shop and you can quickly compare/contrast your exhaust components (if you acquire an FMF slipon for that PowerBomb) as well as lid-on vs lidless power curves..
I am thinking that once fueled correctly with a lidless airbox, your current setup (stock bike + Yoshi ) might be able to do 1st gear power wheelies (with some experimenting on the RPM point before snapping to WOT).. like the wheelie vid below on my signature line..
#38
dyno turner and airbox removal
Hey cool suggestions. I have a klx250s 2018. I just put on the Yoshimura rs2. I guess I now have ‘lean pop’. I knew it would be off fuel wise. Do you have a link or could you point me in the direction towards the proper tuner? Does this plug into the bike? And do you have suggestions/precautions and/or tips in removing the airbox lid? Thank you.