Data Logging for tuning your KZ

We have the same goals, then, so it'll be cool to see what results you get.

One thing I did notice with running pods, is that seating position and leg position did seem to affect the AFR. Since I watch the AFR gauge in real time I can immediately correlate leg position to AFR (without any speed changes or throttle position changes). With datalogging, I don't know if you can see the AFR as you ride. If not, you may want to do some long, sustained highway speed (55-65) runs with a steady throttle. Then try the same thing with different seating positions, just to see what, if any, effect the seating position has on the AFR. Then you'll know if it's critical or not when you start logging warm weather tests.

I was initially thinking of trying to get the AFR gauge, tach, and some sort of throttle readout all on video so I could always see the riding condition (uphill, downhill, traffic, etc), but I may try to do datalogging and just sync to a video camera after the fact.

It is possible to position the computer so that I can see the instantaneous AFR as I ride. That will be another good thing to have a look at. I have heard that about pod filters before, and would like to put some actual data to all of the issues associated with pod filters.

BTW, just thought that I would tell you that I got the Innovate unit that I am using for $250 shipped off ebay. I spent $5 for a used TPS and did have to source a Molex plug to wire in the analog inputs such as the TPS. Just take than in consideration when you think about your video logging rig. You might spend more money than if you just bought a unit that logs the data itself. Not to mention, you get the data analysis software in the package. Not trying to sway your decision, just suggesting the option. All in all, I feel that the LM-2 was a good investment. I haven't even begun to mention that it can log about a million different channels through the test plug on your OBD2 vehicle.

There it is...


12.0 - 12.5 for max torque. 12.5 - 13.5 for max HP.

Not sure why thats said about hp - didnt really look into it further...

Peace.

Yeah, I've been considering a DL-32 If I can get one cheap. That's the big datalogger they have, and it works with the LC-1 unit I already have.

But for $250, the LM-2 is probably a better deal for the type of stuff I'd be doing.

I could probably just rev the bike few times quickly to later sync the video to the data.

TeK9iNe wrote:

There it is...

12.0 - 12.5 for max torque. 12.5 - 13.5 for max HP.

Not sure why thats said about hp - didnt really look into it further...

Peace.

Interesting. Since torque and hp are directly related based on RPM, I don't think you can treat them independently. Anything you do to raise one, will raise the other at any given RPM.

Maybe they just mean torque at lower RPMs and hp at higher RPMs, like in drag racing versus road racing.

.

loudhvx wrote:

Interesting. Since torque and hp are directly related based on RPM, I don't think you can treat them independently. Anything you do to raise one, will raise the other at any given RPM.

Maybe they just mean torque at lower RPMs and hp at higher RPMs, like in drag racing versus road racing.

WARNING: More info: :laugh:

I was looking furhter into this, and I finally understand what they mean (after it being carefully explained to me by a race friend).

The lower AFR produces better torque sooner in the rpm band (at lower engine speed), where the calculated HP is naturally not very high. The higher AFR produces better torque at the top of the rpm band (high engine speed), and thus creates for a much higher calculated HP VS. RPM.

In his laymans terms, it feels like 12's launch better/feel more powerful, and 13's will actually give you a slightly higher top speed, alot like changing your initial and final advance - sort of moving the torque curve around.

These are considering WOT conditions, apparently everything changes when street is considered... :laugh: Course hes never bothered with street.

loudhvx wrote:

Yeah, I've been considering a DL-32 If I can get one cheap. That's the big datalogger they have, and it works with the LC-1 unit I already have.

But for $250, the LM-2 is probably a better deal for the type of stuff I'd be doing.

I could probably just rev the bike few times quickly to later sync the video to the data.

I'll give you an idea. If you were using the LM-2 with a similare TPS setup to mine, then just crank the twistgrip a few times with the ignition on before you actually start the bike. My LM-2 and all the sensors are powered by the brown wire in the harness so they automatically turn on when you switch on the ignition. If you go from idle to WOT and back a few times it just looks like a square wave on your log.


As for the AFR affecting torque/HP at WOT, I'm going to guess that at the top end too much fuel might be putting out the fire slightly, causing a loss of torque near the redline. Just my wild ass guess, I'm no expert.

BTW, thanks for posting that chart. It's a keeper.

Here's nother one for ya:


If you have a colortune plug, at idle the max power spot looks like a bright white/silver flamefront with a hint of blue.
The max fuel economy looks like a much darker blue/black flamefront.

The max power will let you drop the idle very low/lopey, but still uses more fuel than max fuel economy at stock idle.

more info to chew on... :laugh:

That one pretty much agrees with the chart I've been using for years. But that was before alcohol gas, so I wonder if that changes things, or by how much.

.

loudhvx wrote:

That one pretty much agrees with the chart I've been using for years. But that was before alcohol gas, so I wonder if that changes things, or by how much.

.

Right... looks very close, like: 12.4 Power and 15.6 Eco.

Right on.

It's not too much different, but you do need to be a little more rich across the board with the 10% ethanol. According to my research 14.2:1 is stoichiometric for the 10% blend versus 14.7 for regular gas.