Jerky throttle/Aggressive engine brake: Er-6n | GTAMotorcycle.com

Jerky throttle/Aggressive engine brake: Er-6n

Onagoth

Onagoth

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Been struggling with this since getting this bike.

No matter how soft the roll on and roll off, it is no where as smooth as my last bike (which was an R6).

Basically, I'm seeing this as a problem in corners when accelerating...I either have to be in a sluggish gear like 3 or 4th or use the clutch to even it out. When rolling off the throttle approaching the turn, there is always this point when it becomes abrupt, no matter how smooth the roll off. Some corners are pretty disappointing in terms of overall control/smoothness.

Any advice? I've recently adjusted the throttle free play and idle speed, but it doesn't seemed to have helped that much. The chain slack is within spec though it is at the higher end (1.5"). I've read a new fuel map or power commander may be needed? But I don't know anything about that process or what's involved. Plus, I'd like to stay with stock parts if I can.
 
Stock exhaust or any other mods ?
Any of the variants I've ridden (ER6-N, EX650) are generally pretty smooth.
 
Then there's something else wrong - TPS, fuel pump ?
Take it in somewhere and have a diagnostic run.
Is it still under warranty ?
 
I used to ride a 2014 er6n prior to switching to a SS. The throttle response is significantly different between the two. If your reference is a SS, er6n is nowhere close in terms of smoothness. Even the gear box is super clunky.
 
You adjusted the idle speed.Did you reset the tps while doing so? This could have a LOT to do with poor running.
 
Wingboy said:
You adjusted the idle speed.Did you reset the tps while doing so? This could have a LOT to do with poor running.
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I did not, but these problems were there before the idle speed adjustment. And the adjustment was minor (maybe 100-150 rpm)
 
I ride a 2009 versys 650, same engine. I find the bike is very jerky when you go completely off the throttle and back on again. I also find it's a lot smoother if I never really close the throttle fully. I've learned to deal with it over time.
It also is setup from the factory very lean, I've always felt this bike would really benefit from either an ecu flash or an add on like a pc5.

Sent from my SM-A530W using Tapatalk
 
^this
ecu flash or pc5. The flash is cheaper, simpler, if you aren't going to make any other engine changes///or tuning
either above should clean up any off idle lean condition jerkyness. and make for a better running engine overall. as far as I understand. I like carbs.

EDIT- ECU flash is simpler and retains your stock ecu. It will have a map with different fueling and possibly ignition timing. more ~$300
PC5 is completely adjustable for use by a tuner - most often using a dyno to tune. It runs piggy back with your ECU and requires installation.

@BrianP wrote a very informative blurp on this subject if you would like to do a search (technical thread section) and read.
 
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If the problem isn't there when the bike is still cold (just started, still warming up), or the weather is colder, then it's probably the lean stock fueling others have mentioned. That's assuming it has a warm up map of some sort that richens the fuel mixture when cold. I have the same problem on my 821 Hyperstrada, and it was worse today than any other day this year, probably because of the warmer temps.
 
What OP is describing doesn't sound like a problem, because as mentioned earlier, my 2014 er6n also had a jerky throttle. Unless it's overly jerky, I would say it's the default behaviour. My bike was completely stock.

Also OP is comparing the bike to an R6. That kind of smoothness (SS) simply isn't present on the er6n. Maybe OP can tune it ...
 
Relax said:
If the problem isn't there when the bike is still cold (just started, still warming up), or the weather is colder, then it's probably the lean stock fueling others have mentioned. That's assuming it has a warm up map of some sort that richens the fuel mixture when cold. I have the same problem on my 821 Hyperstrada, and it was worse today than any other day this year, probably because of the warmer temps.
Click to expand...

I think lean fueling is a problem on many bikes. Its a product of meeting ever tightening emissions. Some riders are more sensitive to it- others less so and "ride around the problem to avoid it".
I think an ECU flash is an inexpensive way to have a smoother and better running bike. imo.
 
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roadrash said:
What OP is describing doesn't sound like a problem, because as mentioned earlier, my 2014 er6n also had a jerky throttle. Unless it's overly jerky, I would say it's the default behaviour. My bike was completely stock.

Also OP is comparing the bike to an R6. That kind of smoothness (SS) simply isn't present on the er6n. Maybe OP can tune it ...
Click to expand...

Lol. Just because it’s default behaviour doesn’t mean it’s not a problem. It’s just a problem for everyone and shame on the manufacturers for releasing it like that. I understand the need to meet emissions, but at least offer a “for off-road use only” upgrade map that cleans things up for those who value driveability over emissions. And not just packaged with an expensive OEM/aftermarket exhaust “kit”. Sorry, I’m ranting about my Hyper again...
 
Relax said:
Lol. Just because it’s default behaviour doesn’t mean it’s not a problem. It’s just a problem for everyone and shame on the manufacturers for releasing it like that. I understand the need to meet emissions, but at least offer a “for off-road use only” upgrade map that cleans things up for those who value driveability over emissions. And not just packaged with an expensive OEM/aftermarket exhaust “kit”. Sorry, I’m ranting about my Hyper again...
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I rode it for 2 years, and never felt the need to "fix" it. Didn't even notice the jerky throttle till I rode a SS. The bike rides great. Only thing I had a problem with was the gear box. It's very clunky and annoying.
 
roadrash said:
I rode it for 2 years, and never felt the need to "fix" it. Didn't even notice the jerky throttle till I rode a SS. The bike rides great. Only thing I had a problem with was the gear box. It's very clunky and annoying.
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Agreed on the clunky gearbox. I find it doesn't like light throttle and "cruising" type shifts, but rewards a smooth fast shift under relatively quick acceleration.

Sent from my SM-A530W using Tapatalk
 
Offroad calibrations from the manufacturer are off limits, first time EPA found a single one used on road they would be in trouble. The issue isn't necessarily lean calibration but rather an aggressive deceleration fuel cut. An aftermarket reflash can fix this. A power commander cannot although sometimes you can partly cover up the symptoms with one.
 
Can any bike shop do the ecu flash?

Are there any consequences or downsides to doing that?
 
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