I have a 07 Fatboy with K&N High Flow Air Cleaner with stock cover, Vance & Hines Propipe BP 2 into 1 with a Vance & Hines Fuelpak and I run Shell V-Power 93 Octane gas. I have had a stage1 map put in and I have had the bike on the dyno.
After idling or putting around a bit on warm days, I get a ping while rolling the throttle and if its really warm and I am on the highway I get a throttle roll ping at about 70 MPH.
While on the dyno at the dealership, we could never get it to ping. We even took the fan back away for a bit just to get the heads warmer. I have contacted Vance & Hines and spoke to the techs and also the dealer contacted the techs and made some adjustments per the techs advice and it made the bike run bad, hard to start and other issues. With the stage1 Vance & Hines program in the Fuelpak, the dyno tech said the bike runs the best it can with no problems they could find so we left it there. I just am concerned with the ping.
Any suggestions would be appreciated. I am attaching the dyno sheet.
Greg

 

I have some experience here actually... First off, did this happen after doing something new to the bike or did it develop after time on its own? Second, is there timing adjustment on your bike or does your tuner only deal with fuel? Third, what is your current ccp on your bike? Let me know all that and I can at least steer you in the right direction. Also, describe the ping a little. Is it loud, individual pings, or does it sound like a whole bunch of little pebbles hitting the front fender... And what rpm range does it happen (if you don't have a tac, just tell me gear/speed and I can pretty well figure it out)?

 

The ping was only noticed the first time after having it for about a year after I bought it. Vance & Hines Fuelpak is what I am running as a add on EFI management, it does not do any timing changes that I would be aware of. I am running vance and hines fuelpak program FP-1385
I have an attachment of the program and their modes.
The ping is like that of an old Chevy straight six when the pushrods pinged under a load. It usually happens in 3rd gear and 6th gear. I don't have a tach but in 3rd gear I would say it was in the range of 3000-3500 rpms and when in 6th its usually around 65mph and you roll into passing a vehicle maybe like 3200-4000 rpm. I have noticed the hotter it is outside the more you notice the ping. When you first start the bike there is no ping anywhere, its after the full warm up and it has gotten hot.

Thanks.

 

Putting Ur bike on the dyno does nothing as far as tuning it.

Ur FP does nothing other than throw fuel in.

Ur one shot download sounds like its not working very good for Ur bike..

sometimes U have to buy the better stuff to be able to actually get a dyno tune so Ur bike will run its best and not have pinging issues.

Also at 65 in 6th Ur only running around 2500 rpms.. If U don't have some low-mid cams Ur motor doesn't have the TQ to really pull 6th gear to accelerate much at that speed. U just need to drop to 5th to pass..

If U do have cams, depending on what they are, IE SE255's,, those cams can sometimes be pingers under the right conditions.



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I second what oct1949 had to say. Now this is just my opinion, but to me it sounds like you have lots of "parts" that are not liking one another (fuel pack, downloaded map, ac, pipes). I would get it to a tuner and have a pro look at it as a whole system, not just individual "parts".

 

oct1949 pretty much said it all. Something isn't playing well with the other parts, and if you didn't upgrade your cam, you really are a little low on the revs to pass in 6th.
A few other things you should look into: if the problem came out of the blue, you might just have some carbon build-up causing a hot-spot. You could try running a can of seafoam through your intake. Also, you really should check your compression, might be running a little high. Third, I don't know much about your tuner, but if your map looks like the one in the pic, I would almost think you are taking fuel away, not adding it for most of your "modes". The bike, even with the stage1 download, runs lean. If you're taking fuel away from it, being a little lean can cause a ping. Have you pulled your plugs? It's not a exact science, but you can tell a lot from what your plugs look like. White=lean, Brown=just right, Covered in little metal specks= stop driving your bike and get it fixed... Good luck and keep us posted. I was fighting the same problem most of the summer so I really feel for you. It can get frustrating, especially when the dealer tells you "it's normal, all Harleys do that..."

 

Yes I pulled the plugs and they were a little white, I went ahead and replaced them with the ones Harley calls for. I emailed Vance and Hines and a person by the name of Javi Preciado emailed me back and asked me what reference value I was running and I told him the FP-1385 and he told me to change the values of these modes. mode 6 to 3, mode 10 to 0, mode 11 to 0, mode 12 to 0, mode 13 to 2, and mode 14 to 0. Those are huge changes compared to the values they are right now. I again have attached the values of the FP-1385 in a pic below so everyone can see what the settings are now. I will do that probably today but won't get to ride because they are calling for rain for the next 4 days here in Ohio from tropical storm Isaac. If anyone has done this change or knows what these values control please chime in here.

Thanks
Greg

 

I'll look into that tuner when I have a minute or two, but one thing you could try is to run without the tuner and see if it still pings. It might not help, but it won't hurt. If you have stock cams and everything, the bike should be able to handle your pipes and exhaust with your stage 1 flash without pinging, but I can't say that for sure. Still worth a try though.

edit: the only thing i found so far is that mode 17 is possibly the mode that controls fuel across the board. You could try raising the value in that mode and see if it helps, but it's only a shot in the dark... I'll keep looking for an explanation for what each mode does just in case it helps.

 

There are a lot of things going on in this thread, but the most common sources of engine ping are simply wrong fuel and/or wrong plugs for how you are running the bike.




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JABURG,
When you say wrong fuel and or plugs, can you explain? Are you meaning that the fuel being distributed to the cylinders isn't enough or just running the wrong grade, and what about plugs.


Thank you,
Greg A