Power Commander CMD-POD300 and Vtech Logging

[whittlebeast]

Here is a couple of screen shots off two of my loggers The first is off my POD300 with a Candoo Pro GPS for speed input.

http://www.nbs-stl.com/RxpxTuning/POD300.png

and the same data off my Vtech logger

http://www.nbs-stl.com/RxpxTuning/Vtech.png

Notice how the speed is somewhat different. Note that the Vtech setup has twice the data rate. It is tough to verify what one is more "accurate" so to speak.

I personally would not consider giving up either one at this point.

Have fun tuning.

Andy

[whittlebeast]

Note that the spikes in AFR in the CMD log is when the the rev limiter is active.

[Sanfish]

Interesting....

Why not filter the AFR/WB on the CMD setup, seems a bit noisy (visually).

What is the sampling rate of the Candoo? (seems higher)

I have a CMD new in the box for a rainy day...but the terrible water sealing is preventing me from taking it serious. If DynoJet were to make the CMD/PCV fully waterproof and offer ignition control (box) like they do for the Kawi, they would have a slick setup. I like how quickly you can make fuel adjustments and upload to unit, super fast!

[whittlebeast]

That is where I use MAPxRPM vs Duty Cycle to verify if the AFR seems reasonable

Andy

[whittlebeast]

I forgot to mention that I was "on the power" for 14.9 sec in that pull.

Andy

[whittlebeast]

I updated the two links given in the first post.

I also added this screen shot.

http://www.nbs-stl.com/RxpxTuning/Vt...SigStockIC.png

The nearly straight line in the top right is where all the hard acceleration happens. The goal of building any blower motor is to shift this line vertically and to the right. I will be testing a Fizzle setup hopefully this weekend with the same logging setup.

Here is a pick right before I installed the oil catch can and rear bodywork.

http://www.nbs-stl.com/RxpxTuning/Fizzle05.jpg

The blue hose is the 3.5" custom cold air intake running up to the front of the ski.

Andy

[whittlebeast]

Here is the AFR plots off the Dynojet POD 300. I am really starting to like this thing.

http://www.nbs-stl.com/RxpxTuning/POD300%20AFR.png

Andy

[DynojetResearch]

I have a CMD new in the box for a rainy day...but the terrible water sealing is preventing me from taking it serious. If DynoJet were to make the CMD/PCV fully waterproof and offer ignition control (box) like they do for the Kawi, they would have a slick setup. I like how quickly you can make fuel adjustments and upload to unit, super fast!

As to the water sealing, the board itself is completely potted in epoxy. The only openings are the USB port (which has a rubber plug), the CAN ports (which have rubber plugs or CAN connectors will be installed) and the side terminal strip (which has a rubber membrane that wires can poke through, but do a good job of sealing around them). On the inside of a ski, we do not normally see issues with water splashing the units.

[Askin]

Here is the AFR plots off the Dynojet POD 300. I am really starting to like this thing.

http://www.nbs-stl.com/RxpxTuning/POD300%20AFR.png

Andy

Are you using two 02 Sensors or logging one at a time?

[whittlebeast]

Are you using two 02 Sensors or logging one at a time?

I have just one O2 sensor hole. Normally I run the O2 sensor with the Dynojet. I generally do fuel analysis with the CMD. I use the Vtech logger for looking at the ignition side of things.

Andy