On my 1996 Ultra Classic FI I decided to check the intake seals, I was having decal popping, I wonder why...

 

Looks like your dog chewed on it

 

Do you have stock mufflers? Aftermarket ones could be a reason for decel popps. Such decel popping was on mine '96 FI Ultra due to W&Hines open mufflers (now I swap to carb). Don't think chewed intake seals rise decel popp - more likely they can do cough through injector

 

You might be onto something there......

 

we see that very often - that happens when the one side of the intake is pulled all the way in before the other -

correct install is to work both sides at the same time so to speak and use a lube trans assembly lube white grease and others on the seals , so it slides into the correct location with out catching and being pinched -

 

Not true at all.

 

I thought the bike was running good before, but I think that it is a little better now. I installed a AEM wide band A/F gauge, and it seems it is running a little lean, 15s and 16s, I change the power commander settings from 2000 to 4000 rpms. I will ride it to work tomorrow to see how it does, I will take my laptop to make changes if needed.
It has very little popping now.

 

It work good, richened it up, and it was pretty much mid 14s to 1 driving to work, dropping 13s to 1 when gave it a little gas.

 

I had the same issue with the CV carb intake. My seals just rotted in about a year or so. Both sides dry and brittle. It caused a situation where the bike wouldn't idle right and surged a lot.

I want one of those air fuel guages. Gotta look that up.

 

Couple of questions for ya:
Which pipe did you install the sensor , front or rear & how far down from the exhaust port. Thanks in advance.

Ride Safe,
Harold