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Tracer 9 recall


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I had mine reflashed yesterday, however now i am expericing a very strange engine brake issue.

can any of you guys test this, if you in (preferrably a lower gear) 
Go off throttle above 3k RPM and let the bike engine brake below 3k RPM, do you also get a small "jerk" in the drivetrain, almost as if engine braking cuts off then cuts in again? 
Never had this kind of issue with any bike owned. Its just not a good feeling, not a big problem per say. 

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1 hour ago, Sunde said:

I had mine reflashed yesterday, however now i am expericing a very strange engine brake issue.

can any of you guys test this, if you in (preferrably a lower gear) 
Go off throttle above 3k RPM and let the bike engine brake below 3k RPM, do you also get a small "jerk" in the drivetrain, almost as if engine braking cuts off then cuts in again? 
Never had this kind of issue with any bike owned. Its just not a good feeling, not a big problem per say. 

Nope, mine was as smooth as ever but I only put 40 miles on it at Highway speeds and mixed speed traffic.  No jerking noted.

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6 hours ago, Sunde said:

I had mine reflashed yesterday, however now i am expericing a very strange engine brake issue.

can any of you guys test this, if you in (preferrably a lower gear) 
Go off throttle above 3k RPM and let the bike engine brake below 3k RPM, do you also get a small "jerk" in the drivetrain, almost as if engine braking cuts off then cuts in again? 
Never had this kind of issue with any bike owned. Its just not a good feeling, not a big problem per say. 

I have felt what you’re experiencing with my ‘21 9 GT, and I believe both before the reflash & after.
Feels to me like modern electronics/fuel injection/engine braking blah blah…however I’ve been wrong before. 😉

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7 hours ago, Sunde said:

I had mine reflashed yesterday, however now i am expericing a very strange engine brake issue.

can any of you guys test this, if you in (preferrably a lower gear) 
Go off throttle above 3k RPM and let the bike engine brake below 3k RPM, do you also get a small "jerk" in the drivetrain, almost as if engine braking cuts off then cuts in again? 
Never had this kind of issue with any bike owned. Its just not a good feeling, not a big problem per say. 

Yes, I notice this on mine also.  Not sure it wasn't doing this prior to the recall being done. It feels, to me,  like when you're pulling a trailer with a truck and at the last few seconds when the speed drops below a certain point towards idle, the trailer brakes release, and you feel a little nudge.

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On 4/13/2022 at 8:24 PM, KrustyKush said:

Yes, I notice this on mine also.  Not sure it wasn't doing this prior to the recall being done. It feels, to me,  like when you're pulling a trailer with a truck and at the last few seconds when the speed drops below a certain point towards idle, the trailer brakes release, and you feel a little nudge.

Basically this yes
 Its pretty strange, but 100% down to some computer phuckery 
I just cant quite fathom what as, 3k RPM is wayy to high for any kind of low-RPM assist feature to engage.
Remains a mystery, but hardly spoils this fantastic bike 

Edited by Sunde
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  • 3 weeks later...

My dealer completed both recalls and on the first ride the Check Engine light stayed on.  The system said the O2 sensor was bad so they replaced it and the bike runs great.  I think it runs better than before and I agree with others, the QuickShifter is amazing.

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So got the re flashing done today and I spent the previous week doing "butt dyno" checking and making mental notes on how the bike ran before and after.

Before the re-flash I felt the throttle was great, quick shifter did it just nicely, and there was a small fuel injection turn on "bump" when off the throttle (just engine braking not the brakes not applied) and the RPMs drop below 3K RPM. This is nothing new, every fuel injected bike I ever owned had a point where the injectors turned on again.

Well after the re flash the only issue I had was the red yield sign came on for a half a second and disappeared 30 seconds after starting up to head home. I took the long way home to test out the new update.

The only difference that I notice is that the throttle is slightly crisper, but the quick shifter feels the same, and still had that same minor fuel injection turn on at 3k RPMs while engine braking.

I did have a quick stop while kind of hard on the brakes and just quick shifting down. I got the "trailer bump" hit at 1st gear while still engine braking and on the regular brakes and I cant really recall if this did this before the flash.

This is not really a bump but its a sudden lack of engine braking because the fuel injection now turns on expecting you to pull in the clutch. If you did the same thing but pulled in the clutch you'd get the same result.

Over all its a slight improvement over the stock flash and i'm happy with it with the slightly crisper throttle.

 

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So one other thing I got to test was an issue that I reported and someone else did too about a "hot restart" condition. This is where for say your riding the bike and you stop for fuel. You fuel up and then hop on to start the bike. The bike will fire but then stall out. Hit the starter again and usually the bike fires up but maybe boggy or run weird for a few seconds.

I had the pleasure of filling up with expensive fuel and got on the bike and it fired off and stalled, but this time a restart and it fired up and there was no boggy or weird running issues.

The bike was only a few miles warm so while it was at running temperature, it was not "heat soaked" (Running for at least 20 miles) when the issue was most likely to appear.

Oh well ¯\_(ツ)_/¯

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Funny that you mentioned it, I was getting gas a couple of days ago, went to start the bike and it stalled. I thought it was really weird as it's pretty much brand new and doesn't have any power / fuel / flash modifications. On the second try it started without issues though.

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