Stumped...

I have a 2004 road king.S&S 510 g gear drive cams,true dual exhaust,Big sucker air cleaner,cv carb with cv performance stage 1 tuner kit-205 main jet,52 pilot jet.
It just seems like the throttle isn't opening all the way up-seems not to rev as high as it should.and when you try to top it out at around 90-95 mph it seems to be running out of fuel.I raised the float up some-need more maybe?I have ordered a Screamin' Eagle ignition module-hasn't arrived yet.Does anyone have any tips or advice.I have been battling this for 2 months now...should I just turn loose of some money and have it dynoed?And then get ready for the Harley dealership to cost me even more???Please help...Ben.

Yes, I recommend it.

New bikes aren't pans with magnetos anymore, and you cannot fix them with points and condensors from a 1935 Ford flathead. I bought a super tuner when my bike was new and never regretted the purchase.

In fact, I do mods to my bike yearly during winter storage, and I build 70 bucks into each estimate for one hour of dyno time, just in case. Most times my mechanic doesn't need it. But he is a factory trained mechanic, and he adjusts things in minutes that I might never suspect.

Sometimes I talk to my friends and they mention a niggling problem that has "bothered them all year." We are fortunate to have a dynamometer at our dealership. After all, they have no problem spending thousands for chrome and bling, what's another 70 bucks for a smooth running bike?

70 bucks is cheeeeppp for a good smooth running bike...there's no way to put a price on that! I am gonna put my pennies back and just deal with the sluggishness until I can get her down to the Harley dealer and put on the dyno.Thanks.

In my case I have a super tuner. It's easy to hook it up to the dyno. I just pay for shop time.

when you put the carb back on after change to CV Performance parts did you make sure the butterfly is opening all the way when you adjusted your cables?
Just take off the air cleaner raise the slide with one finger and open the throttle with the other hand and see if the butterfly is horizontal. If not adjust your cables until it is. very simple operation.

what altitude do you live at, that sounds like it's awful rich jetting to me, I've got the same stuff in my engine and I'm way leaner than that, Think I have a 48 pilot and a 190 main. that works at sea level or 10,000 ft.

I live in Kentucky-not sure what the elevation is.Not high though.According to the manual a 190 main jet and 45 pilot jet are stock for this model.Is the butterfly checking you referred to something that needs to be done with the bike running or when it is off? I am fairly new to wrenching on my own stuff and am barely getting my feet wet,so I really appreciate all of your help and patience at my ignorance of terminology and procedures!

bike should be off,doesn't matter if it is hot or cold, cold is better cause then you don't burn your hands.
The way I do it after removing the air cleaner is left hand on top of carb insert thumb into carb venture and open slide with thumb. Reach up with right hand and twist throttle to wide open. Adjust cables as needed.
I'd also change the jetting. 190-195 main 48 pilot, but that's your call.

Not sure how new you are to wrenchin, but when adjusting the throttle if one gets longer the other needs to get shorter. After setting the butterfly then adjust cables for slack. The idle cable has a spring on it but you don’t want to collapse it. Just adjust them to where the slack is out or close. To tight will cause undue wear and maybe a sticky throttle. When finished check butterfly again to verify full open position.

As others have said, when learning to wrench, the ($60 or so)HD Service Manual is a very valuble tool. I get a year and model specific HD manual for each new bike, it helps keep up with changes.

For most us the wrenchin creates a bond beyond the bond you get from riding but it's understood that wrenchin is not for everyone, and there is nothing wrong with that either.

And that's my two cents worth. hope it helps.

I checked the cables and the butterfly opens up all the way...I am fairly mechanically inclined and can probably decipher what a manual tells me.I am just stumped as to why my engine won't hit the higher RPM's.Not that I want to run it wide open,but after the mods that have been done,I think it should be a little peppier.Its good to have the advice and tips of you all and I thank you very much and look forward to becoming more adept at some mechanics and maybe one day I will be able to give advice to people as well!

if the butterfly is working properly I'd try the jetting at the speed your talking about it should be hitting the main jet.
just my opinion but I've never seem a carb with jets as big as you say you have in yours.
leaners is meaner :
your probably at least a couple thousand feet in altitude,
you should be pulling at least 105 -110 mph with out any trouble and it should be real health (crisp) sounding, wack the throttle and you get response.