Carb jets for new exhaust

I have a carb jet question relating to exhaust changes.
I put a Santee 2 into 1 header on my '02 FXDL.
Can I use one of the stock unmodified mufflers on this header or would it be too much back pressure since it was for a dual muffler exhaust?

The stock carb jets are 45/190. I don't know what's in there now but the idle mixture plug is absent and the setting is 2 1/4 turns out. To accommodate this exhaust set up what jet/mixture settings are recommended?

I have some trouble shooting to do for a carb cough/fart on acceleration and occasional backfiring on deceleration. I will check for intake leaks and try mixture screw adjustments. I have read hours of posts on the subject on this forum, thanks for all the great info and advice, but I need some direction on the required muffler/carb jet sizes for a 2 into 1 exhaust.

Do I need to have a dealer dyno test it?

Thanks

Hey there..
You may want to post a picture of your headers so folks can see what design they are. Also, if you’re looking for performance, you’ll probably want to find a muffler that was designed for a two into one system. Do you know what size the primary tubes are? I just looked at some Santee systems online and many of them are 2” primary tubes; unless you have some serious engine work done, those will probably be too much pipe for your bike. To answer your question though, considering all other parts on your bike are close to stock, you could probably get away with a 46 primary and keep the 190 main. The more details you provide, the better the response you’ll get…
Take care….

Thanks Copter. Here are the pipes, Santee 11180, 1 3/4".

As far as I know, the engine is stock, but the absence of the mixture screw plug indicates possible carb jet changes. I am reluctant to open the float bowl until I do a little adjusting elsewhere.
With these pipes what is the best type of muffler and jet requirements for sea level Vancouver, BC riding conditions? I like as close to stock as possible in the engine.

Cowboy,

Headers came without mufflers. I have been running the stock muff without baffle but it is for a dual muffler exhaust. I am worried I may do damage to the engine if all things aren't tuned right. I am looking for the right muffler on ebay or elsewhere.

Problem is I am getting an occasional carb cough/fart/noise when decelerating momentarily then accelerating again. The sudden loss of power creates quite a jerking force when it starts firing properly again. I also get some mild backfiring on deceleration. The bike is still in the basement. I will have her out next week to work on it. I am just assembling the various knowledge, parts, advice and manual research before I dig in.

Hey, FL.

Well, first off let me just say that I am NOT a professional tuner nor bike builder. There are many folks on this sight that know a lot more than I do. But, I’d be happy to give you my opinion.
First off, those are nice looking pipes, but they are not really designed for performance. So, I would think that any decent muffler would probably do the trick for you. I know Cycle Shack makes a really good muffler that a lot of folks use, but that’s just one of many good mufflers out there. It’s really all about personal preference. Since you will only be running ONE, I would say that you would want the largest diameter muffler that would fit on your collector pipe, and that clears any frame items or bags that you might have. Of course the bigger the muffler the more noise you will make so take that into consideration. If you are running the stock air cleaner still, I would suggest upgrading to something a little more free flowing. Basically, take your pick of any online store and buy something that fits your style and price range. I run a K&N air filter in my bike with a Ness BIG SUCKER backing plate and a stock HD chrome cover. As far as jetting goes, my last post is still my recommendation. The 46 primary should be plenty for you and the 190 on top should be good too. The CV carb makes that stuff pretty easy. If your still having carb issues with that set up, you should verify that someone has not drilled the slide in your carb and messed with the slide spring and or needle. There are MANY posts here on how to check for that. If the slide is drilled, I would say put a stock HD slide back in it and install a basic kit from CV Performance. If memory serves, when you order from CV Perf, it will ask you questions about your bike and recommend the best set up. Their products are high quality, and their customer service is fantastic. Not to mention really good prices, in my opinion. After all that, there is always the option of taking you bike to a shop and having it dyno tuned. Is it really necessary, probably not if the bike runs well in your opinion. But, if it would give you a piece of mind to know exactly how your engine is running, it may be worth the money to have it checked. Your not building a Hot Rod here, as long as you make sure your not running too lean, the dyno tune would probably be a waste of money. If I wanted to get the MOST from my bike, yes, I would take it to a tuner. That’s what they do and I’m sure they do it better than I could in my garage…

There ya have it, my OPINION. I’m sure some folks would disagree with things I’ve said. If so, they should post a reply! That’s the beauty of these forums… You get LOTS of opinions, then do what makes YOU happy…. Good luck!

Thanks Copter,

I was at the dealer today... Tech there thinks it may be electrical so I am starting with plugs, then plug cables, then ignition coil(my resistance was 0.9, should have been between 0.5 and 0.7). If none of these steps solves the problem I move to fuel and carb. Turns out I have a stage 1 breather kit from the previous owner. Still not sure of jets but if electrical is ruled out after I check things, I may get the dyno test and they will verify jets etc then. The electrical fixes are DIY for about $200, the carb/fuel diagnosis at the dealer will cost more than hundreds I'm sure.

I'll post next week with progress.

I searched that number Santee 11180 and came up with Nostalgic 2 into 1 head pipe for Softails....is that what you have on your Dyna?? With that pipe I can't see a problem with a stock muffler if that's what you want,but I'd check for exhaust leaks...

Lucifer,

Yes that is the PIPE. Any Idea where I can get the matching muffler? I like the look of the stock muffler but it seems too small in diameter for use as a 2 into 1. I worry about too much back pressure. I took out the baffle plate to let more air through but I would rather have a short muffler(20" or so) designed for 2 into 1 use.

Update,

The old plugs gaps were out of spec from years of use (2002 as far as I know). I changed the plugs. The Carb farts are gone once it is warmed up(about 5 minutes with enricher full out for 2 mins and half out for 3mins there abouts). Idle mixture screw was at 2 1/4 out and may have been a little lean based on spark plug examination. Now it is 2 3/4 out. Bike runs well when warmed up, has good acceleration and plugs indicate a clean burn( no residue, light tan almost imperceptable color).
As far as exhaust, with no muffler the bike backfires on every shift up and on almost every deceleration. With the stock baffled muffler there is no backfire or any other perceptable performance deterioration. Very quiet too. Still looking for another muffler option.
I think the carb jets are stock 45/190 since the float bowl screws appear to be the stock brass philips head screws with no deformations from extraction.
I have no plans to change anything now unless I find a great muffler that requires re jetting the carb.

Thanks to all who gave input here.