I just had my 09 Ultra Classic modified with:

- 103 Big Bore
- 255 SE Cams
- SE A/C
- SE 2 into 2 Fatshotz slip ons
- Download but no Dyno

I rode for about 50 miles with no problems. Great increase in Torque and Power, everything that the dealer said it would be.

Filled it up with premium gas as I always have done.

Next 150 miles I now get pinging when on the highway at about 75 mph and 3000 rpm pulling up hills in Tennessee. I also noticed some pinging when excellerating from a stop in 2 and 3 gear with a load on it.

Can someone help with where to go with this? Back to the Dealer?

 

get it tuned.ping can be from alot of things its never good, tuning would be the first place to start.remember no matter what tuner u use it will only be as good as the the guy making the map.

 

The downloads are still way too lean. Get that thing tuned.

 

Mine will do that if I get crappy gas. Try another station. Doesn't matter what name is on the station, some get the cheapest, crappiest stuff they can find so they can get that extra couple of cents a gallon profit.

 

I had the same build done last year on my 08 FLTR. Even with a SERT and dyno it pinged at WOT. Finally I took it to a REAL tuner and got rid of the ping. Dyno numbers were slightly lower and in HP/Tq but it sure sounded better.

 

I have the same build with no tune I plan on getting it done this summer But If I add a gallon of cam2 114 octane it claers right up and it smells really good
I also try the amsoil oct boost and it helps alot as well

 

With the 255's and the cylinder pressure their super-early EPA-mandated intake closing event creates, the downloads just can't do enough to get rid of the preignition. If it CAN ping it WILL ping with those cams; a good tune will take care of it nonetheless. My heads have been cut .020 and with the 255's I could not get rid of the ping on a hot day when two-up; I ended up going to Andrews 31's. Bike is night and day faster, smoother, and happier now. I do not have experience with stock compression and 255's....many guys on here are running them and love 'em...

 

You are wasting your money without a fuel mgt. unit of some kind.

Mark

 

you should get it dyno tuned by someone who knows how to dial in your timing. if you're not using a pcv, sert, pciii, sest or some sort of tuner, i'd suggest getting one and then you can get your bike dialed in properly. if you're relying only on the stage 1 download, it's still too lean for your bike if it's pinging. good luck. get her fixed right so you can enjoy the riding this upcoming season. winter still sux, but spring is right around the corner. yoo hoo......