power commander for better fuel econmy

[peelxtz1200]

hi all just wondering if anybody out there as fitted a power commander to there standard bike just for getting better fuel econmy any info appreciated many thanks neil

 

[GrahamD]

I use the power commander between my ears for that. It was installed at birth and cost me very little. I am sure my parents may have proffered the little black box with wires as a cheaper alternative.

 

[markjenn]

hi all just wondering if anybody out there as fitted a power commander to there standard bike just for getting better fuel econmy any info appreciated many thanks neil

Typically a PC is added to bias mixture away from the ultra-lean stock mixture which is biased towards fuel economy and low emissions and more towards a richer mixture biased towards more power. I've heard reports that fuel mileage doesn't go down much, but I have not heard of anyone adding one for the purposes of improving fuel economy.

- Mark

 

[PowersUSA]

How about tuning for 87 octane? Cheaper gas is the next best thing to using less gas.

 

[markjenn]

How about tuning for 87 octane? Cheaper gas is the next best thing to using less gas.

I doubt a richer mixture would give you the same pinging margins on 87 as 91, but don't really know. There are good reasons to put a PC on a bike, but economizing on fuel costs is probably not one of them.

- Mark

 

[coastie]

Never heard of it. I know I'm more than ready to dismount the bike at 200 miles and take a break, so I can't help you.

 

[jajpko]

I doubt a richer mixture would give you the same pinging margins on 87 as 91, but don't really know. There are good reasons to put a PC on a bike, but economizing on fuel costs is probably not one of them.

- Mark

Many that use the PCV, are doing so for power and smoothness. However you can tune the bike to run leaner and that would use less gas.
I ran many maps, some for economy and some for power.

 

[markjenn]

Many that use the PCV, are doing so for power and smoothness. However you can tune the bike to run leaner and that would use less gas.
I ran many maps, some for economy and some for power.

Since lowest emissions and best fuel economy go pretty much hand-in-hand, I'd guess the stock bike is probably already near the limit on how much leaner you could go for fuel economy. If you had free dyno time, it would be interesting to try.

- Mark

 

[Wanderer]

Howdy,
I believe : if you want to change octane you'll need to change ignition timing which I also believe is an option on the newer PC not fuel to air ratio???
Later,
Norm

 

[jajpko]

Since lowest emissions and best fuel economy go pretty much hand-in-hand, I'd guess the stock bike is probably already near the limit on how much leaner you could go for fuel economy. If you had free dyno time, it would be interesting to try.

- Mark

Mark, have you looked at the dyno AFR readings on a stock bike? This bike is not that lean from the factory and by using a PCV to control the fuel, you can have better fuel mileage, and a smoother running bike without running too lean.

 

[markjenn]

This bike is not that lean from the factory and by using a PCV to control the fuel, you can have better fuel mileage, and a smoother running bike without running too lean.

I doubt it, but anyone is welcome to try.

- Mark

 

[peelxtz1200]

hi all bikes going on dyno next week in standard form my engine man thinks it will be running rich i will post the results next week.

 

[Catsbum]

Since fitting a PC3, mine has gone from 45 to 48mpg. 3 miles is 3 miles!