Was wondering if anyone else in running the V&H Fuelpak? I am running it on my '06 RK and was curious if anyone had any "custom" maps? I'm just going by the Fuelpak recommendation for my setup, True Duals and Ovals, but still think it's running a bit lean.

Any suggestions? Thanks!

 

Not to sound like smart ***, but my bike has S.E.R.T. and dynoed at 1000 mile service and D&D 2 in 1 header, K&N, 8mm plug wire's 06 103 C.V.O. Fat Boy and right at 100H.P & 100 Tourqe and not any engine mods. also rear wheel H.P and Tourqe, but man I have heard good thing's about fuel pack and some not so good, sorry for not having help to give. GOOD LUCK.

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Not to be Mr. Negative but the fuel pack sucks. You might as well put a harley download in it. It is essentialy the same thing. All you are doing is hooking something up in line with the ecm, piggyback if you will. The same fuel table remains in your bikes ecm and whatthe fuel pack does is lies to ecm. It will tell the ecm that it is getting so many parts of fuel,in turn the ecm will compansate. With the harley race tuner (nothing out there that tops it) you acually re-map the ecm that is in the bike. For example if harley was to assemble a performance motor from the factory and race it, they would use the race tuner to get the best air/ fuel table possible. They would not hook something like a power commander or fuel pack and expect the best results because it cant happen. I guarantee it. And the funny thing is they are all compairable in price?

 

The V&H fuel pack is set to run the fuel ratio at cruz speedsaround 14.0 to 14.2according to the Teck I talked with at V&H. He also said this fuel ratio should give good horse power plus good gas milage at cruz speedseven thougha little richer fuel ratiomay produce a hair more horse power hereit will causeyour gas milage to drop way off. The V&H Teck also said they set it up this way to give you the best of both worlds, good powerwhile maintaining goodfuel milage.

My Fuel pack works great on my 07 Road King. Iget 42 mpg and my plugs look good, the bike starts fine and runs great. It also works fine with the 02 sensors on my 07.I have no complaints.

Your bike with the fuel pack is probably fine and not runing to lean.

Take Care,
Bill G

Here is a fuel ratio chart I copied of Cobras web page, it exsplains things pretty good.



Let's explain some of the above terms used in this chart:
AIR FUEL RATIO this is the amount of air, by weight, that is used in relationship to the amount of fuel. We will call this AFR.
STOICIMETRIC a scientist's term for the theoretical perfect burn. All hydrocarbons(fuel) and all oxygen are consumed, leaving only carbon dioxide and water vapor. This is the target AFR that manufacturers use to pass emissions.
BEST MEAN LEAN TORQUE this is the AFR where an engine that is NOT under load, creates its best power with the least amount of fuel. This spot can be found by the old tried and true drop idle test on the low speed screw on a carburetor. Turning the mixture on a carburetor (or the green pot on a Fi2000) until you find the setting where the engine runs at its highest and smoothest idle. This also explains best fuel mileage because you are achieving the maximum horsepower that the engine can produce at cruise speed, allowing you to ride with the least amount of throttle opening
BEST MEAN TORQUE this is exactly what it says, with the engine under load, this is the AFR where it produces maximum torque or power.
CARBON MONOXIDE PERCENTAGE because CO is the direct by-product of any mixture richer than stoicimetric, and it increases almost linearly with that richness, it is the best gas of 5 gases on a EGA machine to watch when you are tuning for performance. Even cruise fuel requires a slightly richer AFR than 14.7 and power fuel even more.
AFR TEST EQUIPMENT it's not on the chart, but all this data doesn't mean much if you cant see it. There are two technologies currently being used for accurately seeing AFR.
1. 4 or 5 gas exhaust analyzers. These are the machines you see when you get your car smogged. The gases give a complete view of what is happening inside the combustion chamber. Oxygen gives a very accurate lean side of the fuel map, CO gives a very accurate view of the rich side of the map, Carbon dioxide (CO2) gives an accurate view of the completeness of the burn and Hydrocarbons (HC) give indications of incomplete burn, like fouled spark plugs, etc. All four gases combine to calculate the AFR.

2. Wide band oxygen sensors. They are very fast, easy to incorporate into computers and dynos because they create an electronic signal. But they are more accurate on the lean side of the AFR fuel curve.
What does all this mean? Simply, if you look at the chart, an engine wants a different AFR when it is cruising than when it is making power. That makes sense, when the engine isn't under a load, a leaner mixture can get the job done. And this fact is exactly what manufacturers use when they are tuning the AFR maps. They can tune the light load/cruise zone for best emissions and good fuel economy, but when the throttle gets cranked, and you demand power, the EFI map can jump into a much richer range and produce power. Engines that just stayed at 14.7

 

Excellent Bill G.

An article in Hot Bikes Baggers showed a dead bone stock 07 HD Tourer with an AFR of around 13.5 top to bottom, if correct then HD is doing a good job.

Fuel Pak is designed (per tech) to keep AFR at stock levels with pipes, a/c, etc., and works best with V&H combos.

SERT is great I think if you have serious mods and have a tuner that can extract SERT's full benefits.

I would not knock the Fuel Pak for a basic Stage1 upgraded bike.

 

Yup - that's a real positive remark!!!!!!

I've got the fuel pack and it works great - does exactly what it say's on the tin.

 

AMEN brother!!!! they will not listen till they smoked motor or need your help, just like teenager, they will do as they please and nothing you say will change there mind. good luck with fuel pack, I think you are going to need it. PURPLE HAZE

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I'm gettin one,,,,, PC's are having probs,,, SERT are on back order,,,,and you need computer skills
fuel pack is fine for pipes and filter only

 

I'm sure that there is thousands of riders out there running a fuelpak or similer fuelers with no problems.

 

I guess I am still confused is the HD race turner the better of the programs?
Ken