Gen 4: 2011-2015 Powerband flat spot 3-5k rpms - Kawasaki ZX-10R.net
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post #1 of 51 Old 09-14-2011, 02:46 PM Thread Starter
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Powerband flat spot 3-5k rpms

hi, i have a 2011 zx10r fully stock with 1100 miles.

traction control off
3-5k rpms
1-3 gears

if you punch full throttle quickly, there isn't any power until you hit about 6-8k rpms. its very obvious and feels as though you've been reduced to 30hp. once you hit 6-8k rpms, you get full power and the bike just explodes forward.

this happens about once in every 15 tries.

i've taken the bike to the dealership but they can't find a problem.

has anyone else had this problem?

thanks
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post #2 of 51 Old 09-14-2011, 10:16 PM
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get rid of the muffler, put on a can, reflash the ECU by Guhl, install a Bazzaz, get a custom map and you're good....LOL

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post #3 of 51 Old 09-14-2011, 10:22 PM
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Quote:
Originally Posted by older guy View Post
get rid of the muffler, put on a can, reflash the ecu by guhl, install a bazzaz, get a custom map and you're good....lol

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post #4 of 51 Old 09-14-2011, 10:22 PM
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I'm pretty sure ALL bikes bog like that when you punch it tha low in the rpm range? i know mine does and it's tuned right.

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post #5 of 51 Old 09-15-2011, 02:24 AM
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my Gen 1 if you get to about 2.5k and punch it will lug for a second start to move through the revs and at 4.5k will really come alive. They just dont like going when youre that far down on the tach.

you can do the pipe suggestion. Id say the biggest thing would also be to get the flash. tuning will step it up too. maybe add a tooth on the rear?
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post #6 of 51 Old 09-15-2011, 03:05 AM Thread Starter
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the problem isn't lack of power at the wheel down low in the rpm range. there is definitely something wrong with the electronics.

in other words, if, instead of punching it at 3k, i roll on the throttle it'll accelerate as expected. it only bogs down when you punch it.
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post #7 of 51 Old 09-15-2011, 04:01 AM
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Nothing wrong, that's completely normal. Try doing that in anything you own.

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post #8 of 51 Old 09-15-2011, 04:22 AM
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My Gen 1 is the same, down low and you open it up, it feels like the rear wheel wants to brake of the bike and GO!!! Not very healthy to punch it at low rpm, wait til about 4.5 and klap it hard.
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post #9 of 51 Old 09-15-2011, 05:05 AM
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Yep Older Guy is spot on!

I had this issue and I found that the stock ECU has a bit of a low rpm fueling issue. I put my problem down to a poorly tuned TPS (Throttle Position Sensor) from factory but either way to bother re tuning you may as well do a pipe and filter while you are installing a new fuel computer (whatever brand) to gain some pony's at the same time.

It will make the bike better to ride across the whole rev range anyway so would be a worthwhile venture just not a cheap dealer fix.

Never know though they may release an updated stock ECU tune at some stage down the track.

Last edited by SBK X; 09-15-2011 at 05:20 AM.
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post #10 of 51 Old 09-15-2011, 06:06 AM
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if you punch it at low rpms, the air doesn't have enough velocity and it will produce less power if you open it up gradually, every sport bike with rev limit over 10k rpm will do it
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