Sputter N Pop

Ok I have a 2001 FLHTCUI. I just installed Vance and Hines Big Shots, Arlen Ness Big Sucker and a Power Commander III. I loaded the map closest to my setup. The bike idles fine. It seems to have more power out of the hole. But it pops a sputters when I'm slowing down. Also the throttle response at mid range could be better. Any suggestions would be a big help. Thanks.

Uhh, never mind. I just realized in my haste to be ready for this weekend I forgot to replace the exhaust gaskets. I'll bet dollars to donuts thats the problem.

I hate that when that happens......:gah:

Will do, thanks.

Yep! Cheap insurance too.

Ok Kenfused
That leads me to my next question since I replaced the gaskets now. As you say they crush into place. How much torque? Another thing I never noticed. Do the flanges snug all the way flush or is there a gap between them and the jugs after they are torqued down?

That would make sense. I think the heat would soften up the gaskets initially. Though I'm no mechanic.

Yep! Must do.

I would get rid of those crappy crush gaskets. I use a different one that are so much easier for install....The SE ones......

I used the SE ones and for the Twin Cam they are crush type also.

we might be talking about different ones then....The ones that I use do not crush, they are a donut type gasket. I am sure that they crush somewhat but not like the stock ones.......I would have to get the name of those because the wife goes and get them for me because around here I can only get them at a place that I won't shop at......

I'm a little late to. I like to know to. I have a bad habit of reusing exhaust gaskets. Was told at one time to "foget abot it"

Well, I put in the new gaskets. Torqued them down to factory specs. Torqued down the clamps and still pop pop sputter pop. Me thinks I'm running too lean. What say you?

If you fixed the exhaust leak and still getting decel pop pop, you're too lean...check for intake leaks too
Here's a bit of info from the Power Commander website to adjust maps without going to a dyno tuner....hope it helps

You may notice that we have a map specifically for "Brand A" slip-on exhaust and another for "Brand B" slip-on exhaust. Although the difference between the two maps is likely to be very small, these difference will increase the optimization for that given combination. If you have a "Brand C" exhaust and we do not have a specific map, you should find that "Brand A" or Brand B" maps will provide a good improvement on your bike. If you have a Windows 98SE/ME/2000/XP computer, you can upload alternate maps or make changes to the existing map using the Control Center software and USB cable supplied with your PC. (Detailed Software tutorials and quick reference software screen shots are available on the CD-ROM or web site).
If you do not have a computer, you can change the fuel curve with the faceplate buttons. This is a simple adjustment that can move the fuel curve richer or leaner in each area of the map. (Please refer to the paper installation guide or adjustment video on the CD-ROM).