This is from 8500 to cutout?

 

Yes. 8500 is leftmost..

 

Out of curiosity-- in the 1500 to 5000 range, have you played around with ignition curves lower than stock? Say, instead of ramping to 35 by 3K, maybe only 15-20 or lower?

No real scientific reason for the question, and indeed those ranges may be close to the stock US curve, but just curious as 1500-5000 seems to be where the KLX just seems to need...help.

Improving torque in that range is like the holy grail for this bike. Maybe your current ramp already does this (improves torque), but you havent shown that range yet.

As soon as I get my low to midrange overfueling issues under control I will do the MCM. A quick ride on my green Mojave with my two kids in the yard convinced me. Something has to be done. My KLX has a lightswitch powerband that starts at 6000 rpm. My Mojave has a +2 CS sprocket and was pulling the front wheels off the ground in second with me + 120lbs of extra kids on board in my yard yesterday.

 

Yes the "large front end" seems to be adding power to 2K-5K.. I am trying something new today.. results later..

 

Ok, starting to do precise measuring off 120fps sport cam video of the dash while pulling WOT runs.

I will need more testing before I fully trust my procedure for measuring performance. I am trying to be as precise as possible. I'll do more runs, back to back, with the stock curve to verify validity. If precision is proved, I'll do a 25° run and test curve runs back to back for calculating performance...

So, if this initial assessment is any good at all, todays test curve is a tenth of a second quicker(.09 to be precise.), 5-10k@WOT 3rd gear, than stock. Analyzing smaller "chunks" does show my curve to be quicker everywhere - a good sign that the procedure is accurate and is why I mention this test here.. Not a huge improvement, it can barely be felt with my DynoButt, but its' a start ..

 

Cool, when you are comfortable with the results, do you plan to post the final before/after videos?

 

Assuming this testing procedure is accurate - once I achieve a significant increase in acceleration , I'll dyno test. The chart will give me the data I need for further tuning. I'll likely post these charts on the top post - this is gonna be a long drawn out process..

Today I want to perform validation of the testing procedure - maybe test a few of my curves..

 

Tested variations on the stock curve today. Main goal, today, is to verify the accuracy of my test method. It does appear to be accurate with same curve runs producing results within a few 100ths of a second.

Due to upload size restrictions, I am not able to post my testing footage.
I am shooting the dash display in 720P 120fps so the files are waay too large to post even if I trim them to just the "nitty gritty"...

So, tested stock-like flat curves today. All rise to max advance at 5K. I am looking for best power levels between 5k and 8K today (the "meat" of my bikes' TRQ curve). These runs are snaps to WOT, 3rd gear, from 4.5k to 9+k. They are run back to back on the exact same course running the same way(should be no wind variable to interfere with results). I am playing back the vids in super slow motion and measuring the time between 5k and 8K as shown on the tachometer. I am using the timer that Windows Live Movie Maker displays while in the "Trim" function. Using this Trim function, I am able to advance .03 seconds at a time. So, I guess .03 is my error factor?

So far, this whole testing method is producing very accurate results.

I will further analyze todays' runs using smaller "windows" to see where the best benefit of the static advance values shows itself most.

WOT, 3rd Gear, 5k-8k
-------------------------
23° - 5.7 seconds
24° - 5.88 , 5.82
25° - 5.70 , 5.76
26° - 5.82
27° - 5.58 , 5.61 , 5.58 -- BEST. I could feel it so did 3 runs with it..
28° - 5.7 , 5.79

I encourage comment !

 

Sounds like youve hit on something. Cant wait to see the dyno chart...

 

I'm curious why you stopped at only 28°. I realize you had gains at 27° with a fall off on either side, but the same thing seems to have happened at 25°. Sorry i don't mean to micro-manage your project. LOL