Hesitation / popping at low RPMs - Kawasaki Versys Forum
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post #1 of 26 (permalink) Old 07-10-2015, 04:17 PM Thread Starter
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Hesitation / popping at low RPMs

Have a 2008 with a Two-brothers slip on, and i've noticed that if i'm low in the RPMs (usually, it can do it a little higher), it pops. Sometimes if i'm slowing down for a corner, it will hestitate then surge forward with the same gurgly pop.

Sort of feels like it's getting flooded and then suddenly correcting, or like it's "switching". I've felt carbed bikes sorta like this, but EFI is a whole new ballpark for me.

Any suggestions where I should start?
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post #2 of 26 (permalink) Old 07-10-2015, 06:05 PM
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Welcome to EFI

Power Commander 5 and Autotune 200 worked for me... but results will vary.
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post #3 of 26 (permalink) Old 07-10-2015, 08:15 PM
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ya as i was saying thats part of fuel injection plus you are running a higher flowing can then the ecu is "tuned" for. pops are air getting into the exhaust causing the left over fuel vapor to combust. if you can ,try to get a video of it acting up

yes im a guy.
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post #4 of 26 (permalink) Old 07-10-2015, 11:29 PM
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Seal off your PAIR valves on the valve cover and in the airbox outlet... You can also rotate your main (lower) throttle sensor counterclockwise by just a hair.
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post #5 of 26 (permalink) Old 07-11-2015, 02:57 AM Thread Starter
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Welcome to EFI

Power Commander 5 and Autotune 200 worked for me... but results will vary.
So dumb question: PC5, or PC5 Fuel and Ignition?
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post #6 of 26 (permalink) Old 07-11-2015, 03:17 AM
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So dumb question: PC5, or PC5 Fuel and Ignition?
Depends on your model bike... Mine is 2012 Versys 650 with O2 sensor uses PC5 with F+I. model 17-042
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post #7 of 26 (permalink) Old 07-11-2015, 12:11 PM Thread Starter
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Depends on your model bike... Mine is 2012 Versys 650 with O2 sensor uses PC5 with F+I. model 17-042
Mine is a 2008.
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post #8 of 26 (permalink) Old 07-14-2015, 06:09 AM
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Mine is a 2008.
So you can still get a PC5 for the 2008 Versys, but it will not have F+I built in (could be added as another module via CAN gateway)

I don't even use the F+I.

Doubt you would need F+I on the 650, unless you are adding a snail and nos
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post #9 of 26 (permalink) Old 07-14-2015, 09:41 AM
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I've been contributing to the "Playing with Power Commander V and Autotune200" thread, regarding this same basic issue.

Trying to maintain steady throttle between 3-4k rpm results in surging and intake popping. I had the airbox off this weekend (TB syncing) and noticed this intake popping/hesitation.

2008 Versys 650

Been riding 8 or 9 years, and have owned 8 or 9 bikes; its an addiction I can't quit...
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post #10 of 26 (permalink) Old 07-14-2015, 10:38 AM Thread Starter
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Quote:
Originally Posted by GiantAntCowboy View Post
I've been contributing to the "Playing with Power Commander V and Autotune200" thread, regarding this same basic issue.

Trying to maintain steady throttle between 3-4k rpm results in surging and intake popping. I had the airbox off this weekend (TB syncing) and noticed this intake popping/hesitation.
Exactly- there's a "sweet zone" between 3-4k where it gets very noisy. I just alleviate it by keeping high in the revs for now.
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post #11 of 26 (permalink) Old 07-20-2015, 01:03 AM Thread Starter
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So just a quick question. Is there any harm in using the PC V F/I instead of just the PC V? Came across a few for sell.

Then there's just this: http://store.58cycle.com/product_p/D...FYSPHwodsnwNMQ -- which this site looks a little sketchy, so i'm not sure.
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post #12 of 26 (permalink) Old 07-20-2015, 05:06 AM
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It is not if it will work... the unit is designed to fit the specific bike. the wiring harnesses might differ as well.

I bought mine from Motomummy.com it was the cheapest online by far.
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post #13 of 26 (permalink) Old 07-23-2015, 08:55 PM
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Quote:
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Seal off your PAIR valves on the valve cover and in the airbox outlet... You can also rotate your main (lower) throttle sensor counterclockwise by just a hair.
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post #14 of 26 (permalink) Old 07-23-2015, 10:13 PM Thread Starter
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Definitely on the worklist, once i take it apart for THE MODDENING.
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post #15 of 26 (permalink) Old 07-29-2015, 07:07 PM
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I'm in an identical situation to the OP.

Just got an 08 with a Two Bros exhaust, pops (and has backfired) in deceleration.

Changed oil and filter last week and plan on fitting new plugs and air filter in next week to see if it helps.

Over 4k revs she is good, under, not so much.
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post #16 of 26 (permalink) Old 07-29-2015, 07:46 PM
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I'm in an identical situation to the OP.

Just got an 08 with a Two Bros exhaust, pops (and has backfired) in deceleration.

Changed oil and filter last week and plan on fitting new plugs and air filter in next week to see if it helps.

Over 4k revs she is good, under, not so much.
All you need to do is like I said...

Quote:
Originally Posted by invader View Post
Seal off your PAIR valves on the valve cover and in the airbox outlet... You can also rotate your main (lower) throttle sensor counterclockwise by just a hair.
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post #17 of 26 (permalink) Old 08-15-2015, 11:05 PM
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Any low flow exhaust will require a remap of the ECU to keep things proper...
Just went through this with my Ducati...
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post #18 of 26 (permalink) Old 08-15-2015, 11:57 PM
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Any low flow exhaust will require a remap of the ECU to keep things proper...
Wrong, my 2012 with the LeoVince runs perfectly, no re-mapping.
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post #19 of 26 (permalink) Old 08-16-2015, 01:37 AM
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It could run better....
Trust me!
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post #20 of 26 (permalink) Old 08-16-2015, 04:28 AM
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Anything could run better .......
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