Dynatek Dyna FS ignition system to replace the stock WR450F ignition system.
Works with 2003 - 2011 models
Allows you to correct the factory problems with 'map toggling' (studder), and change ignition curve maps with dip switches
Standard 'go-to' map for curing the studder is map 3, which is the mildest ignition map (nearly stock 2003 map).
Going to Map 2 (2006 YZ450F) gives you more power everywhere, but it is 'ragged' and still exposes some of the studder.
All supplied/loaded maps (1-4) are made up of (3) combined maps, that over lap (or toggle): closed throttle, partial throttle, and WO throttle
So, map 2, the radical map, has a different sub-map for the three different throttle positions, determined by the TPS.
Well, what if you want to have a more advanced setting, and still fix 99% of the studder?
What if you wanted the closed throttle, partial throttle and WO throttle ignition curves to work in different rpms than defualt?
What if you wanted to alter the provided map curves, to change the amount of advance, and when it occurs in each TPS map?
Then you need the Dyna DIPK-6 programming tool.
It's just a 'black box' that goes between a supplied plug on the iginiton harness, and your laptop.
This allows you to:
1. Calibrate your TPS (really calibrate it, and check it, in seconds)
2. Alter the stock maps 1 through 4
3. Alter the 'turnover points' for the partial throttle and WOT sub-maps that make up each map
4. change rev limiters
5. Advance and retard the entire map, or individual parts of the map
... and a bunch more cools stuff....
So, &%$#@! are you supposed to do with all of that information anyway.....
Look at the screen shot below:
This is the screen you see when do basic programming, calibrate the TPS, and alter TPS turnover points.
Look at the TPS Calibration box, and you can see the TPS is already calibrated. It takes 30 seconds to do.
Look at the TPS Settings box, and you can see the turnover points are 57% open throttle for the WOT curve and 28% open throttle for the partial throttle opening curve.
Out of the box the turnover points are are 12% and 48%.
The 12% is part of the problem.
It is position on the throttle that is very common for cruising the street, and therefore the ignition likes to jump between closed and partial throttle maps. AKA 'studder'.
So now, when at 12% throttle, you are below the next sub-map. At 28%, you are accelerating in almost any terrain, so you don't feel any toggling occurring.
( The Dyna's stock curve # 3 is 48% and 65% turnover points, putting the 'toggle' point way out of range, but also forcing a very tame map)
I also clicked the 'Advance Timing' box, to advance everything 1 additional degree (from 10 to 11 at idle, for example) using the Timing page options:
Now, the bike idles with more authority (advanced timing by 1 degree), the transition from closed, to partial, to wide-open throttle are no longer 'felt' like 'flat spots' in the throttle throw and rpm range (turnover points) , and the partial throttle studder is 99% gone, while still using the 'radical' map #3 (turn over points)
I hope this information will help anyone out there considering the Dyna FS ignition to get their bike to run smoother; and you will also have the added benefit (if you buy the programmer) to improve the overall running characteristics of the motor.
The bike now runs quite a bit better, much more smooth authority off idle and much less feeling of 'uh-oh' when needing power 'right now', at any rpm.
Part of the reason I never posted lots of technical installation and tuning details when doing the cams and porting, is because I knew the sooner or later I would have to deal with the TPS turnover issue to be able to evaluate what this motor really feels like.
In fact, I believe that some of the reason that some people have great success with just bolting on the YZ or hotcams without any other modifications, is because their stock ignition is probably advanced a degree or two more than others are, either by mistake, or by bad electronics, or by chance. I have ridden stock bikes that are all identical but all have substantially different power characteristics (something I've never felt before to such an extent) and now I honestly think it's because the stock ignition is not very good, and has been shipped out with varying degrees of advance and retard, right from the factory. I think that would explain a lot.
I also think that just a YZ or hotcams set up and the Dyna FS and programmer would be all you need to get the bike to run amazingly smooth.......and that you don't 'need' the porting to 'fix' anything. It just wakes up the power (radically!) and makes the motor run cooler and smoother.
But let me be perfectly clear about this : THIS MOTOR ROCKS with the AS Racing stage 3 port and polish added to it!
It's a fire-breathing monster, and a gentle little lamb, all controlled easily with your right hand.
I would invite anyone who would like substantially more power, without any compromises, to take mine for a spin.
Edited by Krannie, September 29, 2013 - 09:38 PM.