Vance & Hines Fuelpak Talk.

[Jeffytune]

Originally Posted by chromedome88

can anybody confirm that if I unplug the Fuelpak it will go back to what it was, the stage 1 download?

HI.

The Fuelpak is a self contained unit, it does not change anything inside the ECM.
So, yes If you take off the fuelpak, the same program in your ECM will be what you had.

[rsofa]

I understand about going back to stock if removed but say I take the bike in for service and remove the fuel pak what do you do with the AC can you swap the element or do you have to put the stock one back on??

[xandvphyle]

Originally Posted by rsofa

I understand about going back to stock if removed but say I take the bike in for service and remove the fuel pak what do you do with the AC can you swap the element or do you have to put the stock one back on??

I put the fuel pak on after I had the download and the pipes on along with the K&N air filter set up. If i took the pak out I would have to do nothing else as it would simply be reconnecting the ECM. The Bike's configuration was evaluated by the V&H guys and then they gave me the numbers based on what i had told them I had on the bike. I would assume that the numbers or values you keyed in on the FP were based on your sitting bike. If that be the case take it off and reconnect the ECM. If you changed the conifiguration of the bike after the fuel pak was installed, the figures would have to be entered differently for the FI to operate at top efficiency, I would think. I am curious as to why you want to take it off? I can understand if you just don't want to get into a conversation about it with the service writer but the maintenance on these things, for the most part is pretty simple and I do it myself now. Besides, the shops should work for me..... but i understand some of these folks can get kinda

[rsofa]

Well I planned on putting the pipes AC and Fuelpak on myself after the 1000
mile check up..But I thought the dealer would frown on these additions if I was to take it in for anything else as far as warranty and what not? And if I did take it off I would think the gike wouldn't run right with the AC still on to much air? I know I could get by with just the pipes!

[Jeffytune]

Originally Posted by rsofa

Well I planned on putting the pipes AC and Fuelpak on myself after the 1000
mile check up..But I thought the dealer would frown on these additions if I was to take it in for anything else as far as warranty and what not? And if I did take it off I would think the bike wouldn't run right with the AC still on to much air? I know I could get by with just the pipes!

I will give the short technical answer.
The reason why you need to adjust the base fuel program has to do with Volumetric Efficient.
It is the amount of air the engine can flow in and flow out. If Harley had used a Mass air flow sensor, the ECM would know how much is going in, but without it, the VE becomes a Programed value.
When you install free flow Items like pipes and air filter, you are increasing the amount of air the engine can flow, if the ecm doesn't know it is, it leans out the fuel because there is more air going in then the ECM is giving fuel for.

There are many ways to get the fuel curve fixed to match the new air flow, and the FuelPak is by far the easiest one to use.
Most need to have a Tech dyno tune in the fuel curve, Vance and Hines has already done that on a bike similar to yours, so all you need to do is set the program by tapping in the numbers, and your all done, ready to ride.

[rsofa]

Thanks for the Info Jeffytune...I know about the airflow and what not I just wondered how easy it was if the stuff needed to be taken off before it went to the stealer...I know I'd be safe eaving the pipes alone on but what about the AC if I removed the FuelPak for the short time at the stealer?

[hoosierdaddy]

Hi to all , glad I found this forum lots of good info . I just installed V&H true duals with ovals and I noticed the rear head pipe is glowing at idle . I've read most all the fuel pak post and did not see this addressed . Can the fuel pak be adjusted to cure this problem ? I've read alot of post that claim this normal but I can't see how . I've been running the fuel pak with V&H ovals and stock head pipes for some time now and never noticed this .

[Jeffytune]

Originally Posted by rsofa

Thanks for the Info Jeffytune...I know about the airflow and what not I just wondered how easy it was if the stuff needed to be taken off before it went to the stealer...I know I'd be safe eaving the pipes alone on but what about the AC if I removed the FuelPak for the short time at the stealer?

No just leave it on, without anything to richen the fuel up, they can say that anything like a lean run damage was because you didn't have the fuel richend up.

Q: Is your dealer Destination Harley?

[Jeffytune]

Originally Posted by hoosieraddy

Hi to all , glad I found this forum lots of good info . I just installed V&H true duals with ovals and I noticed the rear head pipe is glowing at idle . I've read most all the fuel pak post and did not see this addressed . Can the fuel pak be adjusted to cure this problem ? I've read alot of post that claim this normal but I can't see how . I've been running the fuel pak with V&H ovals and stock head pipes for some time now and never noticed this .

Hi.
It sounds like you have a lean run Issue, do you have a Fuelpak installed already?

[hoosierdaddy]

Originally Posted by Jeffytune

Hi.
It sounds like you have a lean run Issue, do you have a Fuelpak installed already?

Yes already installed.

[Jeffytune]

Originally Posted by hoosieraddy

Yes already installed.

What program did you punch in?

Have you checked your program on Vance and Hines fuelpak site?

[rsofa]

Originally Posted by Jeffytune

No just leave it on, without anything to richen the fuel up, they can say that anything like a lean run damage was because you didn't have the fuel richend up.

Q: Is your dealer Destination Harley?

Yes it is Destination..

[hoosierdaddy]

Originally Posted by Jeffytune

What program did you punch in?

If your bike has the stock program, then you should be using FP-0516.

If you had the stage one download done, you should be using FP-0738.

I'm running fp 0537 which according to V&H thats the program they recommend .
I talked to on of the Fuel Pak techs today and they are suppose to get back with me . Just to clear up what I'm running I'll list it again , 2007 FLHT stock ecu
fuel pak , true duals and ovals .

[Jeffytune]

Originally Posted by hoosierdaddy

I'm running fp 0537 which according to V&H thats the program they recommend .
I talked to on of the Fuel Pak techs today and they are suppose to get back with me . Just to clear up what I'm running I'll list it again , 2007 FLHT stock ecu
fuel pak , true duals and ovals .

True duals, I missed that, I looked it up as slip ons.

Sorry about the confusion.

Ok, lets delve into the too hot Issue.......

Does it run as hot on the front pipe as well, or just the back one?
Did it start doing this before you installed the pipes, right after you installed the pipes or some time after you installed the pipes?

I need to know to help you farther.

[hoosierdaddy]

Originally Posted by Jeffytune

True duals, I missed that, I looked it up as slip ons.

Sorry about the confusion.

Ok, lets delve into the too hot Issue.......

Does it run as hot on the front pipe as well, or just the back one?
Did it start doing this before you installed the pipes, right after you installed the pipes or some time after you installed the pipes?

I need to know to help you farther.

Its running hot on the rear pipe only . I just installed the duals this past weekend and noticed the problem right away . I can't say if this was happening
prior to the new pipe install or not . I never really looked for hot pipes prior to this and the way the cross over area is shielded it would easy not to notice .