Disconnected Power Commander

[nwguy]

I was told my 99' Bassa has a Power Commander. I've never had a bike with one but have installed Beetle maps with Guzzi Diag in my old Norge and a friend's. While stripping and cleaning the Bassa I found a disconnected Power Commander III. The Bassa has straight through pipes from a Ducati that are loud. Sounds cool, but on a long trip, meh. As I mentioned in another post there was a drop in power when I downshifted and tried to pass a car. Power was good otherwise. I found some stock pipes on Ebay and am wondering if the flat power spot would reduce or go away with them. The Power Commander has actual, physical buttons on it labeled low, med and high with a lean/rich scale. Unfortunately the user manual online I found only covers using their software. Do the buttons simply adjust from richer to leaner?

I do plan to do a tune up too.

[PeteS]

Before you do anything with the Power Commander, change the TPS as noted in another thread. A bad TPS will give flat spots with or without a Power Commander. If that gets rid of the flat spot then try and locate a map for a stock bike and work from there. I have never played with the buttons, not sure mine even had buttons, only tweaked the maps with a PC. You upload and download maps that way.

Pete

[Tom H]

I don't know enough about Power Commanders, but it looks almost like a slider is missing where it goes from lean to rich?? I would think you hit the button for what rpm area you want to fix and slide a lever to lean or rich??

If I was you, get the new mufflers on and see how it does without the PC with a short ride. Then give it a proper tune up ( READ THIS... https://archive.guzzitech.com/EVTuneup-Jeff_B.html) including valve adjustment. Look it over with Guzzidiag and see where your at. With Guzzidiag you can adjust the fuel trim which might help if a good tune up doesn't solve your issue. Then you may want to look into the TPS but follow the guide I linked and see what your TPS voltage is, but maybe not make an adjustment just yet unless it's way off.  (.525V) is about what your looking for.

EDIT:.....The .525V is when the TB's are adjusted and ready to run. If your going to do the entire procedure as mentioned in the guide, then the TPS would be .150V with the TB fully closed.

Tom

[John Croucher]

I don't know enough about Power Commanders, but it looks almost like a slider is missing where it goes from lean to rich?? I would think you hit the button for what rpm area you want to fix and slide a lever to lean or rich??

If I was you, get the new mufflers on and see how it does without the PC with a short ride. Then give it a proper tune up ( READ THIS... https://archive.guzzitech.com/EVTuneup-Jeff_B.html) including valve adjustment. Look it over with Guzzidiag and see where your at. With Guzzidiag you can adjust the fuel trim which might help if a good tune up doesn't solve your issue. Then you may want to look into the TPS but follow the guide I linked and see what your TPS voltage is, but maybe not make an adjustment just yet unless it's way off.  (.525V) is about what your looking for.

Tom

The window is a light bar that shows throttle position and the setting of the Three position.  It has two functions.

[Ncdan]

I was told my 99' Bassa has a Power Commander. I've never had a bike with one but have installed Beetle maps with Guzzi Diag in my old Norge and a friend's. While stripping and cleaning the Bassa I found a disconnected Power Commander III. The Bassa has straight through pipes from a Ducati that are loud. Sounds cool, but on a long trip, meh. As I mentioned in another post there was a drop in power when I downshifted and tried to pass a car. Power was good otherwise. I found some stock pipes on Ebay and am wondering if the flat power spot would reduce or go away with them. The Power Commander has actual, physical buttons on it labeled low, med and high with a lean/rich scale. Unfortunately the user manual online I found only covers using their software. Do the buttons simply adjust from richer to leaner?

I do plan to do a tune up too.

I’ve got a set of OEM pipes that fits the EV models.
You can have them if they will fit. Pm me if interested.

[guzzisteve]

You have a 15M ecu and connector port, you can put an updated map in it w/GuzziDiag. Go for stock pipes if the Conti replica's are too loud.
I used a Techlusion fuel box on mine to cover the spots when running my Mistrals, not too loud.
As far as TPS book says + or - 15 milliamps and I add +10 when setting so 165 it runs way better but I run K&N and pipes.
Have fun & be safe.

[twowings]

Buy a slingshot and launch that gizmo as far away from your bike as you can...

[marcmorrison]

The previous owner of my Bassa installed a Power Commander, but for reasons he did not elaborate, he removed it back to stock.  I also have a pair of Mistral pipes that came on my bike at the time of purchase...I eventually went back to the stock MG pipes...seems like the ECU unit would not make the necessary fuel adjustments to accommodate the Mistrals and I didn't want to investigate and spend additional time/$$$ to make them work.  If you'd be interested, you can pay for shipping of the Mistrals (can send you pics, etc.) and have them for nada.  Just my uneducated opinion, I think the stock ECU on the Bassa can only go so far to adjust to any changes in the fuel/air flow (either in or out)....I'm sure there are others who can change the mapping on the ECU to accomplish this...I just prefer to remain stock as much as possible and work with that setup.

[PeteS]

One thing a Power Commander can do that I doubt you can do any other way is to adjust the timing. Anyone wanting to build a hot rod and not just get rid of the flatspots would want a PC. Get the heads flowed, maybe dual plugged, along with a cam plus the common intake and exhaust mods and I doubt the existing map could be optimized for that setup.
All depends on your goals.


Pete

[nwguy]

Thanks for all this info. I think I do wanna go for stock pipes and see how that goes.

[marcmorrison]

If your Bassa doesn't already have a simple H crossover pipe, you will find the stock H pipe has a baffle on it that prevents easy drainage of the transmission fluid.  Of course, since you wont be changing trans fluid that often, perhaps a few minutes to remove the stock H pipe to allow draining would be OK.  Be warned, sometimes changing to the simpler H crossover pipe will result in some engine flat spot issues....probably allows too much air flow, upsetting the capacity of the ECU to make the necessary fuel mix adjustments.