This is my first post on the Dyna forums, so bear with me as I'm normally on the Sportster forums and know a lot more about Sportys than big twins..

That being said, I currently ride a 2007 1200C and I'm looking to trade it for a new 2012 Fat Bob in the next couple months so I've been doing research. When I get my Dyna, I will likely have more questions but for now here's what I'm wondering:

I'm a big fan of the Nightrider products, and currently have the X14iEDs on my Sporty with SE breather and SE II pipes & it runs awesome. I did a lot of research on tuning & programmer & such when I added my breather and decided to give the XiEDs a shot first instead & I coulnd't be happier..bike runs MUCH smoother, plugs look great & it was inexpensive & I don't have to worry about my bike running too lean.

When I buy my new Fat Bob, I'm wanting to set it up like I want it right out of the gate and the first thing I want to do is add the SE breather, and some good slip-ons of some sort & I'm leaning toward the Rush 2" baffles. This leads to my question...would I be better off having the dealer do the Stage 1 download with my a/c & pipes, or would I be better off installing XiEDs and getting my AFR down to 13.8:1? I know with the Stage 1 it will still be the factory & EPA compliant 14.7:1 AFR in closed loop. I don't want an expensive tuner or dyno time as all I am going to do is add an SE breather and slip-ons, so these are my 2 options...which one would you Dyna guys recommend?

Also, would the XiEDs void my warranty if I'm running the SE breather and don't have the Stage 1 download? I would prefer to buy the a/c, pipes and XiEDs and install it all myself, but don't want to jack up my warranty either which is why I'm thinking about having the dealer install the a/c and doing the Stage 1 download to protect any possible warranty issues, then I will put the pipes on myself.

I have also read where the Stage 1 download and XiEDs are not compatable & the iEDs will confuse the Stage 1 programming, so it doesn't sound like doing both is going to work.

Thanks in advance for your advise and input!

 

I have a 2012 Fat Bob with SE air intake and SE slip-on mufflers. I had the factory download installed. It runs great and sounds good, not too loud. The problem with adjusting the air fuel ratio is that it will damage the catalyst. I think for the sake of warranty you will be stuck with the factory download.

 

Unless the dealer can prove that a warranty problem was caused by the XIEDs you should be fine. Not wanting to get into a pissing contest anyway I removed mine before I brought it to the dealer. You know it's easy enough and not worth getting into a battle with the service dept.
My opinion of the dealer download is that it's a waste of money. Your bike will still run lean, and if you decide later to get a tuner the download won't help. I would go with the XIEDs since they will make it run richer in closed loop.

 

I will give ya my opinion. I have a 12 FXDC. I had just the Rush 2.0 slip-on's and had real bad decel pop. Added the FL-VIED (just adjustable XiED) and almost all of the decel pop was gone. Then added the HD heavy breather and WOW.....decel pop gone and the bike will haul some a$$ now. The combo really woke it up. As for the warranty couldn't tell ya. If I had to have any warranty work done I would take the XiED off before taking it in. Hope this helps.

If I had the extra money (throw all extra money I have now at CHROME) I would probably buy a tuner just from what I have heard others say but I have zero complaints with my set-up.

 

Yours has a different set up on the catalyst. The Fat Bob still has a cat after replacement of the mufflers. That rich fuel mixture will damage the cat.

 

I have the exhaust and the SE Heavy Breather in the garage. I still have to order the Xieds. I emailed the guy at Nightrider and told him the exhaust and intake and he told the Xieds to order. I'll have everthing installed by the time weather warms up to ride.

 

I was wondering about the cat issue and if richening the AFR with the XiEDs would damage the cats, guess some of you believe it will. That's definately something to consider. Maybe I should consider a full exhaust system instead of the slip-ons?? Then I could put on the XiEDs, intake and not have to worry about the cats with the richer mixture. I would love to have a Thunderheader, but I'm sure we're talking big $ compared to some slip-ons.

 

So you're basically saying that the cats are in the mufflers on the Super Glide & Street Bob exhaust set up, and in the head pipes on the Fat Bob & Wide Glide set up?
Can someone educate me on how the cats are set up on the Dynas?
What happens when you remove then by installing a full exhaust system...what does that do to the programming & the bike?
My Sporty don't have cats so it's never been an issue.

 

Yeah, if you are worried about burning up the cats (legs whatever), to use the Xieds on the 2012 FB, you will need to replace the entire exhaust, not just slip ons. You may want to doublecheck with Nightrider.

Other dynas have the cat in the cans, so slip ons would work better there.

Removing the cats is the same as removing baffles (and stock slip ons), and opening up the exhaust.

If you desire, there should be plenty of non cat fatbob take off head pipes arround (2009 and older 96 inch models)

 

That makes sense...didn't think about damaging the cats with a richer mixture. My Sporty don't have cats so I've never taken that into consideration.

Sounds like I have 2 options....if I want to go the XiED or ViED route, I should get a full exhaust system & if I'm going to just do slip-ons & breather I should have the dealer do the download. I don't want to damage the cats.
I would rather richen it up, but not at the expense of possibly clogging up the cats....hmmm