Just installed the Big Radius 2-2 on my Fat Bob and installed the map from V&H with their FP3.
When riding, everytime I go to shift up, the rpm between 1900-2100 cause alot of vibration. Goes away once past the 2100 mark.

It only happens between those settings and is really bothersome.

Anyone else experienced this and know the best way to get rid of it?
Still have decel pop also. If no one has an idea, I will call them and see if it can be tuned out.

Thx

 

You are lugging the engine trying to up shift at such low rpm's.

 

Not shifting until almost 3000 each time.
Sometimes exceeding what the book recommends for speed to shift.

I go by sound and not sure what else to do.
Have to ride 3rd gear up to 45 before I shift to avoid some vibration.
Have yet to even come near 6th gear on this bike.

Thx

Edit: Had the V&H slip-ons before these and didn't have any issues with vibrations at those rpm's.
Think the map needs some adjusting at lower rpm's.

 

OK, If you cruising at 1900 - 2100 rpm's and getting vibration you are lugging the engine. Get your rpm's up!

 

I don't cruise at those rpm's, around 24-27 when I cruise at whatever gear I am in.
Typically: 1st gear up till 25mph; 2nd till 35, 3rd till 45, 4th till 55 and so on.

The 19-21 just happens to be the rpm it drops down to each time I shift.
Did not have the vibration issue with the slip-ons and other FP3 map.

Thx

 

Did you have it Dyno'd?

 

Autotune it

 

+1...also FP3 now has a decel pop reduction feature, go to EDIT MAP under AIR/FUEL if still popping after AutoTune..

 

Why are you letting the rpm's drop to 1900 - 2100 after you upshift?

 

I don't, thats just were it is when I shift.
I hit around 2800 then upshift and it hits 2000 before I accelerate again.