Dyno Charts and Tuning 2013 KLX250S
#41
10-03-2016, 08:16 PM
Join Date: Jun 2013
Location: North Texas
Posts: 3,221
Kevin, you will certainly gain all the benefits with the #40.. The Pilot system only fuels idle/deceleration and the richness of the "fake accelerator pump shot" (Which effects throttle response- especially at very low RPMs..) The other pilot system fueled ops are weird instances of running the bike with the throttle just barely cracked open (1/8 or less on your right hand)..
Last edited by Klxster; 10-04-2016 at 06:59 PM.
#42
10-03-2016, 08:44 PM
Join Date: Jun 2013
Location: North Texas
Posts: 3,221
Kevin, as for the change in "operating sound" of your bike. I do know for a fact that various lidless carb setups will change the sound of the bike. I do not know exactly why and could only speculate - but let's ignore this for now, see below..
My bike got a mean growl when I was testing a DJ150 main jet (
) It sounded like a wild animal about to kill and eat sumpin.. I loved it and thought the bike was performing better. Dyno test showed that it WAS NOT !! AFR's dipping into the 10's:1 - so TRQ was down almost everywhere.. That sound must have totally tainted my dynobutt assessment !
My bike got a mean growl when I was testing a DJ150 main jet (
) It sounded like a wild animal about to kill and eat sumpin.. I loved it and thought the bike was performing better. Dyno test showed that it WAS NOT !! AFR's dipping into the 10's:1 - so TRQ was down almost everywhere.. That sound must have totally tainted my dynobutt assessment !
#43
10-03-2016, 08:51 PM
Yeah...I'm running the stock pilot. This is the klxster proven setup for the 2152 kit, but that may change with the stock spring (instead of the DJ softer spring I was using). If I remember correctly, you have the 2206 kit, so that may be the reason for #40. I was thinking about upping to the #40, but will try the 2N & 3N first, mostly because I don't have a #40...but I am intrigued
Originally Posted by klxster
I haven't said this yet - it's still a little too soon in yalls' testing - but there is a very good chance that if low/mid fueling is controlled well with yalls' stock spring/clip setting - more power can be found with bumping the main jet size to DJ142, or possibly(but less likely) a DJ144. A DJ140 shows 13:1 on top (a little lean for max power) - 12.5 to 12.8 (:1) will give more power above 6.5-7K RPM. But less altitude forgiveness..
#45
10-06-2016, 04:17 PM
Join Date: Jun 2013
Location: North Texas
Posts: 3,221
007, you should reinstall the stock slide spring and test for increased power levels, increased power ramp-up, and stronger throttle response in the range of Idle to 7K RPM.
Above 7K is "main jet fueling only" and there should be no change from what you have now..
These two guys are running as you are (non-MCM), and are reporting good/better results by reinstalling the stock spring..
Above 7K is "main jet fueling only" and there should be no change from what you have now..
These two guys are running as you are (non-MCM), and are reporting good/better results by reinstalling the stock spring..
#46
10-06-2016, 04:25 PM
Join Date: Jun 2013
Location: North Texas
Posts: 3,221
Also, K and 007, here is the part number and a purchase link for the #40 pilot jet.. Don't let it break your bank accounts..lol
#40 pilot jet - Kawasaki part no 92064-1108
92064-1108 JET-PILOT,#40 $8.67
#40 pilot jet - Kawasaki part no 92064-1108
92064-1108 JET-PILOT,#40 $8.67
#47
10-07-2016, 02:26 PM
007, you should reinstall the stock slide spring and test for increased power levels, increased power ramp-up, and stronger throttle response in the range of Idle to 7K RPM.
Above 7K is "main jet fueling only" and there should be no change from what you have now..
These two guys are running as you are (non-MCM), and are reporting good/better results by reinstalling the stock spring..
Above 7K is "main jet fueling only" and there should be no change from what you have now..
These two guys are running as you are (non-MCM), and are reporting good/better results by reinstalling the stock spring..
maintain 2N?
-007
#49
10-11-2016, 03:35 AM
Join Date: Jun 2013
Location: North Texas
Posts: 3,221
Top post updated with Houston's latest "uncorked" chart. His power levels are astonishing!
Please do not diminish these results by looking at peak numbers. Doing so is myopic. The "area under the curve" is all that matters - alternatively, print out the "before and after" chart and measure the power differences at points of RPM. For instance, I calc 23% increase in TRQ at 6k rpm..
Please do not diminish these results by looking at peak numbers. Doing so is myopic. The "area under the curve" is all that matters - alternatively, print out the "before and after" chart and measure the power differences at points of RPM. For instance, I calc 23% increase in TRQ at 6k rpm..
Last edited by Klxster; 10-11-2016 at 11:41 AM.
#50
10-11-2016, 02:27 PM
i noticed he's on 1N. I'm not smart enough to figure out why you're recommending me to stay 2N. Please explain for all of us on the 2N.
Thanks,
007