Still won't rev

I had posted several times on here about my 2004 road king having issues which I think may be carb related.I have installed s&s 510 gear drive cams,true dual exhaust,K&N air cleaner,screamin'eagle ignition module.The bike just won't rev up all the way-will not hit the rev limiter no matter what I do.Seems really sluggish and flat.Got a cv performance kit in it-205 main jet( 190 is listed in the manual as stock) 52 pilot(45 is stock) What on earth would keep a bike from revving???

It was worse before I put the ignition module on.I was thinking carb problems-maybe the vacuum slide not opening up all the way.Not I am just plain stumped!

It was worse before I put the module on>I was thinking maybe carb issues-maybe the vacuum slide not working properly.Now I am just stumped!

My 1975 Sportty did that to me when I put the new exhaust on...turned out to be too much back pressure,I opened up the baffles and she ran like a dream...Hope you find your problem

Is the slide opening up all the way??With the engine running and air cleaner off,blip the throttle and see if the vacuum slide opens properly.
Those jets seem huge to me for the mods done on an 88"er.

It just seems like it will not accelerate or rev up as it should. I noticed that the slide doesn't really make that sucking sound when I manually open it.Could the diaphram or spring be the problem?

That is a possibility.We had the top off of it back in the summer when we replaced the cams.Would that give me the symptoms I have described?

diaphram could be pinched and it really sounds like you got it rich, I have the same set up as you and I have a 48 and 190 for jets.
you probably won't ever be able to hit the rev limiter in 5th gear, and if you hit it in any other gear it is going to sound like it is flying apart. 6200 rpm is a lot for these bikes. but it should set you back on the seat when you gas it off the line, got to remember that is a heavy bike you have,
how does it run compared to before you put the carb kit in?
if i can hang on mine will smoke the tire,

didn't you ask these same questions a little while back? Have you tried all that was suggested then?

I have tried everything except going back to smaller jets.I don't expect it to hit the rev limiter in 5th gear,but even when I had the factory ignition on it,it still wouldn't rev up to whatever the limit was on it-5500 or so.I don't want to take my bike up to 6200 but it seems like its stuck at like 4000-just a guess since it has no tachometer.Thanks for the help-sorry if I asked any of the same questions,Ben.

seriously I'd back off on the jet size and see how it reacts, if you only go down 1 size and see what happens. how do the plugs look, people will tell you can't read the plugs for a fine tuning, but they will sure tell you if you'r to rich or to lean. and if i remember correctly you checked for air leaks around the manifold to head connection and the carb to manifold connection. how about you'r VOES, is it working correctly. I'd be living in the shop manual until I got it figured out. just a few more thoughts. The jetting is the easiest to check and change. keep us posted on how it is progressing.

That's where I think your problem is....the piston isn't lifting and you're not getting enough air flow and the wrong fuel mix from the needle as you open the throttle...run the engine with the air cleaner cover off and check to see if the accelerator pump sprays when you give it a quick shot and that the slide goes up and lifts the needle jet as you rev the engine.
here's a few pic's of how the slide should go
Chinese Scooter Reference

the slide raises up...I am so lost here-what is wrong with my motorcycle? there is just no acceleration and will not hit the upper rpm range.

is the butter fly opening up to be flat when wide open? lift the slide with your finger and twist the throttle wide open and look into the carb opening. adjust cables at connection to carb until it lays flat at wide open.

I think it's time to pull the carb....you say you have the CV performance kit which I think has a 46 pilot jet in it(Ken knows for sure) I'd start with the 46 pilot CV performance needle and a 190 main and set the idle mix screw at 2 1/2 turns out from gently seated. Check your slide diaphragm for tiny holes or tears and if good put it in the freezer for a while, makes it easier to install without pinching it.
When reinstalled adjust the cables so the butterfly is horizontal(wide open) when the throttle is open all the way and snaps back to closed when you let go of the throttle.
Fire it up and take a test ride see how it performs, let us know if it's better, worse or no different and then we can all scratch our heads together.
Everyone here thinks your jetting is huge and you could very well be drowning the engine...your plugs could be partially fouled,not giving a very good spark pull them and check...are they black?? let us know.... would also be a good idea to see if the VOES switch is working properly

VOES? What's That?