Power commander for 2013 ST

[rabtech]

I just looked at the map they have on their site which was pretty much for a 2 brothers and foam air cleaner. It looks pretty generic. I can see that on the bottom side they are just adding 8% fuel and at full throttle in the middle rpm it is cutting fuel out up to 25%. And on top its still leaning out at 11%. Has anybody put a 2013 on a dyno and actually measured the air/fuel on it. Here I the map that is posted on the power commander site.

Sent from my Galaxy S3. I may have made a spelling error or may have some grammer issues. My fingers are way to big to type on this tiny screen!

 

[johnnyg]

I don't no about all those numbers above but I noticed the other day that my wives 2011 RS has more back pressure coming out the back then my 2013 ST, so we have two different sounds on them. But we like them both, hers is just a little louder than mine.

 

[Orange monster]

That seems strange that they would need to lean the mixture out more than the factory tune in the upper throttle and rpm range. I thought these bikes were lean to begin with and would need fattening up on the top end with aftermarket pipe and filter.

 

[jcthorne]

As with most emissions tunes, they are very lean at low and part throttle for emissions reasons. The are rich at high throttle to protect the motor and where the emissions are not tested as they spend very little time there. Leaning out the high throttle areas and adding a bit of timing is where most aftermarket tunes for cars and bikes get the extra ponies.

 

[Sny]

I don't no about all those numbers above but I noticed the other day that my wives 2011 RS has more back pressure coming out the back then my 2013 ST, so we have two different sounds on them. But we like them both, hers is just a little louder than mine.

More? You mean less right?

The 2011 RS doesn't have a cat... the ST does... unless you've removed it?

 

[Sny]

I just looked at the map they have on their site which was pretty much for a 2 brothers and foam air cleaner. It looks pretty generic. I can see that on the bottom side they are just adding 8% fuel and at full throttle in the middle rpm it is cutting fuel out up to 25%. And on top its still leaning out at 11%. Has anybody put a 2013 on a dyno and actually measured the air/fuel on it. Here I the map that is posted on the power commander site.

I've made a post about this before... the 991 motors of the RT's and 2013+ RS/ST are closed loop until 8000 rpms so there's not much point in getting an Autotune for fuel efficiency as you don't cruise at 8000+. The Autotune would work great on the high throttle positions however, so you can set your "just barely fat enough" AFR and still protect the motor from leaning out at high throttle, high rpms while giving the perfect burn for peak power at everything in-between.

On the older GS/RS models (2008-2012) the 990 motor was closed loop until 6000 which means you're turning for both power ( > 40% throttle) and for Interstate cruise efficiency (75mph+ = 6000rpms+)

For us to reduce temps we'd have to seat-of-the-pants tune it... or invest in an AF gauge and data logger...

It certainly can be done but it'll take a lot of guessing and trial and error. Eventually someone will do it and post a map that will work for most people.

 

[rabtech]

OK. That makes the table make sense. I was wondering why it was similar in those ranges.

Sent from my Galaxy S3. I may have made a spelling error or may have some grammer issues. My fingers are way to big to type on this tiny screen!