What's your MPG?

[BillB]

Can you map differently by gear with the TuneBoyLIVE? - I don't know about you but I do NOT use the throttle the same in each gear.

In theory you could had 10 different maps in a PCV - One per gear and the "Map Switch". I now have a decent baseline (per gear) via the A/T. After my run home/back - I will be leaning out 5th a bit around 3000-4000rpm and under 40% throttle. I'm not doing it now before a long run - just in case I screw up.

90 miles to empty the tank - Well done!.

@barbagris Does your standard have a gear indicator on it? That map for each gear thingy sounds interesting but I don't know if it would work on a touring. No gear indicator on my 13 touring so how would it know what gear I was in?

 

[Speedy]

It's all in the tune. If your staying at or near 14.7:1, like the stock tunes, you'll get good mileage....
No one I know tunes for 14.7:1, you'd be leaving a lot on the table if you did, so as soon as you do headers and get it tuned you get the Triple mileage hit: richer afr targeted, more air so more fuel, more inclined to ride harder.

Going a given steady speed on a given Rocket 3 requires x amount of power; no matter if it has headers or open intake or any other engine modification. Simple wind and rolling resistance to overcome. And, if a header and better breathing intake improve efficiency, then the motor should consume less air and less fuel at a given speed. The Rocket is not harmed by 14.7:1 at a steady cruise. It can run at 15.5:1 at 10% throttle all day long. The R3 does run cooler and smoother below 2,200rpm at 13.5:1 or richer. But highway speeds are generally above that where adequate airflow past the exhaust system keeps the leg cooler and mileage is of more concern to some riders.

Many TuneECU tunes I have seen are not optimized for driveability nor mileage. Changes to the throttle position map, load map, and the transition settings between them can provide great acceleration, still offer peak hp, and maintain mileage nearly as good as stock. Of course statement 3 applies to us torque addicts that can't keep from twisting the joy stick so getting good mileage is as much our choice as it is dictated by the tune.

 

[Claviger]

Tuning lean cruise and rich high throttle openings is fine, and something I have done myself, quite often. Completely agree tuning lean of peak lean torque won't hurt an R3 motor one bit.

For my own ride though, I don't like the compromised part throttle response that tuning for lean cruise can create. I much prefer the instant response of a 13.5 or so cruise. I used to have it lean cruise, for a long time.

Really looking forward to getting to Nels in Seattle in January and getting three tunes built on a dyno, planning on best power map, lean cruise map for distance rides, and security "valet mode" limited to 15 mph.

 

[Speedy]

Where the transition between throttle position and manifold pressure maps is set makes a difference in throttle response as does the difference between the two maps when the motor is loaded similar, i.e. if the injection amount with manifold pressure at 2,600rpm and 800hPa is set way less than what it is in the TP map at 2,600 rpm and say 10% throttle opening the motor responds less crisply. It appears that Triumph's enrichment algorithms use these table's data and the transition settings as inputs in determining the "accelerator pump" quantity, shape and duration. (My deduction here based on how map changes respond but I have no hard data from the ECU for proof.) TuneECU doesn't allow user access there but Tuneboy's new version might.

And with the O2 sensor active, everything changes despite the AF settings table. I don't use one because I couldn't get repeatability over time.

 

[sleeves]

Gotta ask

Anyone else here buy their Rockets to worry about the fuel economy?

 

[Joesmoe]

Really though . . . only peripherally -- it's really range (for the Touring anyway). So if I'm not concerned about mileage, then I'm complaining about the amount of fuel the 'tank with no volume' holds.

 

[Blackthou]

2014 Roadster.

I did a brim to brim Saturday before and after mixed riding at about 60 mph with some squirts when the road was clear followed by dual carriage way crusing at 85 with the odd blast to 110 - 120. Got 42 mpg over 85 mile run.

 

[WyldCFH]

I ride an hour each way to work... 95% of that is at 80-85mph...I am typically happy if i hit 30mpg.

 

[Nogrey]

The BASIC PCV has the option to have 2 "sets" of maps. If you use AutoTune it takes one of those sets. ON THE FLY FLIPPABLE

Thank you. I've looked at these units and I'm a bit confused as to which one would be appropriate for my bike.

 

[Rocket3Pilot]

Going a given steady speed on a given Rocket 3 requires x amount of power; no matter if it has headers or open intake or any other engine modification. Simple wind and rolling resistance to overcome. And, if a header and better breathing intake improve efficiency, then the motor should consume less air and less fuel at a given speed. The Rocket is not harmed by 14.7:1 at a steady cruise. It can run at 15.5:1 at 10% throttle all day long. The R3 does run cooler and smoother below 2,200rpm at 13.5:1 or richer. But highway speeds are generally above that where adequate airflow past the exhaust system keeps the leg cooler and mileage is of more concern to some riders.

Many TuneECU tunes I have seen are not optimized for driveability nor mileage. Changes to the throttle position map, load map, and the transition settings between them can provide great acceleration, still offer peak hp, and maintain mileage nearly as good as stock. Of course statement 3 applies to us torque addicts that can't keep from twisting the joy stick so getting good mileage is as much our choice as it is dictated by the tune.

So this was my reason for staring this thread. It seemed to me that if I was getting 38 to 40mpg on a bone stock 2013 roadster, adding RamAir, TOR's, and headers would allow me to get more HP and torque with the same MPG or slightly less, not 28 to 30mpg. I understand that the extra power I got for hard accelerating would take more fuel but I've tried several full tanks, to just go easy, and still I can't get better than 30mpg? I don't care about the cost of the fuel, but it seems to me that it should be tunable to achieve close to stock fuel burn, yet have increased HP when you open up the throttle, with these common mods?