i was responding to w00t's statement about dyno tuning being a means to make more profit. if anything it's the other way around lol.

and LOL at the graph. nice try though.

 

kpro's sample rate is slow... it's at the mercy of the pc used and the usb connection to the ecu

software look good. i have a question - what's up with the adjustments i can make to the torque? how do i make adjustments with the slide bars?

 

The slider bars are just there to help make better visual comparisons between the lines. The 1st slider bar adjusts all of the torque curves up or down on the graph. This is just helpful for cars that make considerably more or less power, and need to bring the torque lines into a better view.

The 2nd slider bar adjusts the slope of the torque lines. This is helpful for compensating for aerodynamic drag, or for realigning the torque lines with the fuel lines for a better visual comparison.

The 3rd slider is just to move the red torque line up or down by itself. I added this on just for the purpose of comparing old datalogs with new ones. It's basically an adjustable fudge factor.

The 4th slider is to adjust the fuel lines up or down for better visual comparison.

 

you know the kpro ECU itself can datalog, right?

 

Hey man since you decided to compare your ish with the eDyno, I figured I might as well commentate on some inaccuracies in your comparison. It is what it is, and I haven't used your solution so I'm making no "comparison" myself nor do I have any desire to discredit your work. I just don't want false info floating around about the eDyno.

[QUOTE=gernby,Sep 10 2010, 02:21 PM]A post was created a few minutes ago, but was quickly deleted.

 

Sweet! I'm glad to see that those features have been added! I've never actually used the eDyno, since it wasn't free. All I've seen is a demo video that I believe was created right before it was made avialable for paid subscriptions. IIRC, it would just handle 2 datalogs at once, and would show graphs for torque, HP, AF, and cam angle.

As I tried to say above, I don't think this spreadsheet is in direct conpetition with the eDyno. The spreadsheet is just a simple, side of the road tuning tool. I consider the eDyno to be more of a presentation tool.

 

Yea, those with the memory/circuit board update. Mine for example cannot. Even then, its limited to I believe 50 frames a sec.

I found a post that made reference to the sample rate you get with the laptop being limited to the amount of live data you're displaying. When I get a chance I will datalog a pull without nothing but the sensors tab open to see if the framerate goes up.

 

you realize 50hz sampling rate is spectacular resolution for a datalog right?

I mean, you said it as if that's not very much.

Flashpro datalogs at 50-60 hz (i think) so yes, that is more than enough.

 

I thought hz was another way of saying sample rate. As in 50hz = 50 frames per sec. Per gernby, for his program to work you need like 200 or so fps

 

The FlashPro will datalog at about 200 samples per second, but that doesn't mean that the data within the samples is really updated that often. The engine RPM is only updated about once every 5 samples, and even then, the RPM value seems to jump around a bit. That is why the smoothing algorithm is so tricky.

I didn't have this issue on my previous software dyno for my Lexus. The data I was getting from the CAN bus was awesome! Even though I was getting about 60 frames per second, the resolution of the data was very good. The resulting torque curve was much better.