So, my bike is rediculously fast, but it kinda sputters when riding at low speeds. Like, if youre riding at 35mph at 3000 rpm, its ba-baaaa-baa--ba-ba-baaaa-ba. Ive got a power commander with a custom map, flies out, tre, and aftermarket pipe. In the straight away, its a missle! but when youre holding a steady but slow speed its rough as crap. Its not jerky, but it sounds awful. It only has 1500 miles on it, so im clueless. I must be missing something.
Any ideas?

Welcome Chef. Any rpm fluctuation while she's "sputtering"?"Rough as crap"......"not jerky"...okay....which is it? . Get some Gumout High Concentration Injector cleaner.Pour in half...fill tank.Run that down.Repeat.See what she does now.

So you're saying...she sounds like a...... ...BUSA?

* Last updated by: blue07 on 6/16/2011 @ 10:39 PM *

"Man, I really got a rippin bike here. Yeah, now if only I left it alone."
Hey, your bike. I don't give a flying shit what you do with it. Like you're going to tell me not to touch mine?
"Man, yours is all stock so shut up!"
Yeah, but I have a fuse on my fuel cutter so I can remove that map off the low speed riding around town like less gas shooting in.
"Man, if I liste to you, that map is going to transition to shit I have it both ways."
Well, go shoot yourself in the foothe fuckiss off that tune then.
"Man, I'm about sick of your ass and I'm going to tell you, I'll have that tune both ways."
You mean you'll live with the stumble and shut the fucup you had to tune a street bike that needed shit done?
"Man, I'm trying to figure out whathe fuchew just said!"

Just so ya know Hub will try to beat you down for modifying your bike. But really, you've got a lot of different factors there for something to go wrong. You need to narrow it down some more before anyone can give you a definite answer or direction to go. What kind of exhaust is it. Have you done anything to it recently that might have made it run different.
I'm betting from your post you got some BS map on there that doesn't match well with your mods.

1500 miles and all those mods? When did you install them? Did you even ride the bike stock for any amount of time?

I rode it till about 850 miles, took it in for its factory service work, then stripped it down and added mods. I also changed the ergos to my liking, risers, seat, etc... The reason? Cause in stock form the 14 is kind of a pooch. Who DOESN'T at least add a power commander or jet kit, a pipe and a nicer seat to every bike they own? Thanks for the beat down.
Edgecrusher, it has a two brothers exhaust, and i actually tried several different maps i purchased online.(mistake) Then i took it in and had it dyno mapped. I suppose "rough as crap" sounds MUch worse than it really is. The bike pulls nice and smooth all the time, but it just sounds awful between 2000 and 4000 rpm. Ive owned dozens of bikes, but this is only my second fuel injected one. Its been running like this pretty much since i had it dynoed. Could it be throttle body sync?
This whole thing doesnt bother me all that much, but if i can do something to make it a bit smoother, i will

I did try riding it stock....i'm an admitted horsepower junkie. It dynoed at 195.6hp and 119.8torque :)

"Just sounds awful"...still pretty hard to decipher WHAT exactly you mean.Does it sound as if it's "misfiring"?That's why I asked IF it was fluctuating on the tach while it's doing this.If it's NOT changing rpm's,then it sounds to me like perhaps...your exhaust is just being itself.You're hearing a modded exhaust note.That's my guess...and it's ONLY a guess.Lots of these "exhaust/engine" sounds are muted by the stock exhaust...they're there,ya just don't hear em.The Kawasaki mufflers are VERY good at keeping the DBs at the minimum.You don't hear backfires and such...but they ARE there.

well 2-4K is where your flies would actuate if you had them in so maybe it is related to this in some way. Has the bike always been this way or just suddenly?

Its the flies mine did the same thing as soon as I removed them. I just happen to have the same exhuast also. I know exactly what your talking about.

Sounds like the map to me... You're dyno numbers are a bit on the high side for a "stock" motor... Maybe your tuner was more concerned with making peak power over smooth power? What year is your bike? If 2008+. I have a very smooth custom map I can send you to see if it fixes your issue.

it has a two brothers exhaust, and i actually tried several different maps i purchased online.(mistake)

Can I ask, who's Map did you purchase ?

awful between 2000 and 4000 rpm.

Dogs got you covered.

Sorry it took so long to get back. I had shoulder surgery and couldnt even back my bike out of the garage! It was a jeffo map i was using. Since posting this originally, i have been out to ride it, and it IS actually missing At low rpm.
I wasnt entireley sure before, because i didnt get much riding time, but now im certain. It does still pull smooth when you open it up, and it settles down when it hit 4500 rpm, but steady speed under 4500 is missing real bad.
Dogo-i'd give it a try if you"ll send it to me

OH, and yes, it is fluttering on the tach

Send me a PM with your email addy and I'll send you the map.

Its not jerky, but it sounds awful.

I don't think this is exactly the same situation but thought I might mention it because it seems related...probably COULD be fixed with some VERY precise mapping---anyways-

I hear my engine rhythmically skip a pulses when I am at very small throttle openings--. It doesn't matter what rpm. Actually. I think it is normal. Have heard race cars off in the distance make this "sputter" obviously not accelerating from the even tone, and then they get on it hard coming out of the corner. My bike does the same thing when I just tickle the throttle going into a corner or even rolling along on the street. It actually sounds kind of cool at high rpm but yes, a little shabby sounding at low rpm. Oh well, race or street--you draw your line where you want and that is where you have it.

My guess is that PCs do not map for the tiniest of throttle openings (5% is the lowest, think???--they don't map much lower than that if you look at a fuel table)

OH, and yes, it is fluttering on the tach

* Last updated by: Rook on 7/13/2011 @ 10:36 AM *

You are going to waste a set of iridiums. Shut it down. Pull the hot side of the PC. This sends the map dead. Go take it out and hammer it so you clean the plugs up. Did the flutter go away? Scenario say yes it did. So it is not the bike. One down. Get a hold of Dogo for a map. Load it up and see if the sputter went away... If it did, you ride the same rpm flutter and it is not there, it has to be a map scheduling. Bike is perfect stock = YOUR BASELINE...

* Last updated by: Hub on 7/13/2011 @ 10:56 AM *

I'm wondering now..."sputtering"...hmmmmm.Here's something...when my bike is just off idle...moving in first...the "engine" kinda pulses...the whole bike.I'm wondering if THIS is what you're speaking of.It's not a mis.No.Just feels like the trans or something...you know,like in a car in 1st...how it'll kinda "lurch" if ya don't increase the throttle.It's not bad....not with mine anyway,but it's there.Kinda rapid fire....guess you could say..cause the bike doesn't weigh anything like a car.

Well, problem fixed. Dogo's map made it run 100% better. Thanks again, i was gettin a bit frustrated. Thanks guys for the input. I guess i know a local shop i WON'T be going back to for mapping

Glad ya got er sorted.NOBODY likes ridin a rocket with a 'misife' or whatever!

yeay thanks for the update!

Hey I am having the same spuddering problem with my bike. I have a 07 with a power commander 3 and a full Yoshi exhaust. Can someone hook me up with that map or one that works

Mine had a stutter off the bottom.Pulled smooth everywhere else. Didn't really try to fix it. Then, I had a coil fail....put new coil in and.....stutter is GONE! So children, it seems that my coil was already on it's way to coil heaven. Whoo hoo it's smooth again now.

Mad

Hey, ninja had a misfire, where it was not a map, not a coil, but the ECU. Do we know its a map or something else, bb?

I need the map please