My PC3 came in last week and I'm going to install it over the weekend and yes, Jaime has a map that's leaned out for mileage. He made me a custom map for my D&D Fatcat with the emphasis on being somewhat leaned out for mileage.

 

I have the PCIII wih the LCD. The bike was dyno'for max power. I then loaded this tune to lap top. From there made new maps by reducing fuel 2, 4, 6, 8,10, 12% in the TP of 1500 rpms through 3000 rpms. I can change the maps on the fly. Also with the LCD I can change the mix in the three main rpm ranges, trim each cylinder, log engine ops, etc. Now iit is easy to adjust for different density altitudes, temps, cruise, or power.

 

Running the FuelMoto setup (PCIII, SuperTrapp SEs & A/C ) Bike runs great !!! Yes, gas mileage went down (somewhere in the 30s MPG)......& I could care less !!!!!

If I wanted good gas mileage I'd buy a Honda 400 or a moped..........just my $.02 WD

 

You may not care less, but I do. I am planning an extended trip from Ohio to California in June and going from 48 mpg to somewhere in the 30's is not acceptable to me. I am more than willing to sacrifice some power for a little better gas mileage. I will be riding with a friend who has an 09 Classic with a six gallon tank. Not sure if he will like it much that I will have to stop more often...........

I may be forced to keep it 'as is' until after the trip. I will just have to put up with the heat.

my .02,

Ben

 

He does offer a leaned-out map, developed last fall after the gas price increased when people suddenly became interested in good mileage, but for me it isn't leaned out enough. Keep in mind that Jamie must tune for the worst-case scenario, which would be someone in NV with no oil cooler and running non-synthetic oil who makes a lifestyle out of cruising Las Vegas' main drag during rush hour in August. You get my drift, I think.

OTOH, I have an oil cooler with two fans fabricated behind it, run synthetic oil, and have a switch attached to the PCV. With AT the switch will toggle between Jamie's rich base map and my Target AFR table (AT mode) that is leaned out in the cruise range for mileage. If the going gets hot I'll switch to open-loop (Jamie's map) until I can safely switch back to closed-loop. I might be considered on the opposite end of the scale as the best-case scenario where AFR's can be leaned out more in the interest of mileage. With this setup and just a bit of attention to engine heat I won't have any problems.

The map Jamie sent me has 13.8:1 (Target AFR's) in the cruise range, which is too rich for what I want. At first I bumped them up to 14.5:1 and got 46mpg on a slow ride in rather cool weather, which was lower than I had been getting with my leaned-out PCIII map, which as it turns out was probably leaned out a bit too much. I have pushed the AFR's to 14.7:1 and got 47.5mpg today on a mostly slow ride (55-65mph) on the backroads. I think this is acceptable, and when air temps rise into the 80's and 90's I think I'll be up around 50mpg on these rides. I just wish I could do this well in the city, but that's not going to happen with any setup including stock.

I would buy the PCV and ask Jamie to give you his leaned out map. If it isn't giving you the mileage you want start reducing the values in the cruise range incrementally. As I mentioned earlier I had been running a zeroed-out cruise range for over a year and was getting excellent mileage while not sacrificing the WOT performance tuned into Jamie's map. Mine's an '07 which may not correspond with the ECM's programming in your bike.

In case you missed it, I wrote-up my install and initial tuning experiences with the PCV-AT here. Warning: It is long-winded with some install tweaks that apply to '07's only, but you might want to look it over.

My advise above assumed a PCV-only install with no AT. AT will open new options by allowing you to specify the AFR you want in 250 areas of the RPM/TP graph. The beauty of it is that you can tune for mileage where you ride most and leave the values above 3k RPM and 40% TP alone. I want maximum performance when I nail it and don't want any AFR that would reduce that.

Jamie's standard settings in the cruise range are safe for the multitudes Jamie is selling to, but I would start with 14.2 and move up if you aren't happy with the mileage it gives, up to 14.7 at the very top (same as stock closed-loop), although that level of leanness may be going too far for summer, especially without a cooler. BTW, I consider an oil cooler required equipment on any TC, especially the TC96. It does a great job of helping keep engine temperatures under control--not a panacea, but a serious aid.

Self-tuning may take a bit of experimentation to find your personal sweet spot, but it's in there somewhere eager to be found. The fun is finding it, although not everyone shares my enthusiasm for research (tinkering) of this sort.

If that's 48mpg overall, including city riding, that's going to be hard to beat. This is very doable on the backroads with a properly tuned PCIII or PCV, but not in the city or even an average of two. A bike will likely never exceed stock mileage using an EFI controller, that is without leaning AFR's above safe levels, but you can get close. Of course if you nail if frequently you will be in the rich part of the map more often and that will affect mileage.

 

Rode w/ an 08 Ultra from WI to Tennesse last summer.........(08 has the 6 gallon tank).........Just my .02, but we found ourselves (had the wives on back & I was PULLING a trailer) wanting to stop every 120-140 miles for a breather...........never put more than 4 gallons in during ANY stop.

WD

 

If any of you would like fuel mileage enhanced maps simply let us know when you order. If you already have a Power Commander that you purchased from Fuel Moto we can get you a new map no problem simply use the map request form on our website.

 

Actually we do offer fuel mileage enhanced mileage maps for most setups. However with our standard maps we actually see few issues or complaints with MPG and 95% of the our customers see the best overall results with our standard maps. Mileage is typically in the low 40's. Many posts we read that talk about MPG concerns are comparing their stock bike to when they changed the mufflers, air cleaner and added a EFI module. It is very important to understand there are several factors involved here. When you take into consideration that replacing the stock restrictive intake and mufflers requires additional fuel, but also note that we are also correcting the stock AFR targets and richening the mixture allowing the bike to run properly.

 

Jamie, what's the leanest you would recommend for a 88/96/103 motor when looking for MPG in the cruise range?

This is one of the things Ill be playing with in the autotune next week. I'm letting it optimize the basemap right now, and I'll save that as my power map. Then I wanted to take that power map, lean out the 2000-3000 range, autotune for the changes, and save that as my MPG map.

 

Bob & Jamie....thanks for the replies. A lot of very useful information here. That has taken care of my questions.