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Discussion Starter · #1 ·
Hey guys, like the title says. I am experiencing a slight hesitation when accelerating between 3500rpms and 4000. It happens most noticeably on 3rd gear pulls but not limited to that. Is this part of the stock ECU tune, or should I consider having mine reflashed/ disconnect the battery?

Anyone else notice this?

Thanks!
 

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Discussion Starter · #3 ·
740. Just recently cleared the 600 mile mark. I was wondering if it had built a memory due to me constantly shifting just before 4k rpms..? Doesn't feel like turbo lag to me though. Feels almost like a the fuel cutting out.
 

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Discussion Starter · #4 ·
For more clarity. It feels like like a slightly jerky loss of power. Like it's not getting enough fuel injected. I used to drive a 2012 WRX, so I am familiar with turbo lag, this feels completely different.
 

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I occasionally notice it at about 4200rpm. If you don’t have the performance pack I would suggest it’s a torque limit or where they’ve designed the overboost to cutout earlier. If you do have the performance pack it’s hard to say but dynos do show a power dip at this point.
 

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I have had the issue too. The drop off in power is large, like the turbo is gone for a breath, then comes back again. It feels like a stutter.
 

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They have a TSB our for injectors on this car. You might want to get it checked so they can swap them out under warranty if there is an issue. Mine had to be swapped. My whole engine did have to swapped as well but the injectors were first.

What's the manufacturing date on your car?
 

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740. Just recently cleared the 600 mile mark. I was wondering if it had built a memory due to me constantly shifting just before 4k rpms..? Doesn't feel like turbo lag to me though. Feels almost like a the fuel cutting out.
No but you can try disconnecting the ECU for 30 minutes to reset back to factory settings.
 

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Discussion Starter · #9 ·
I'll look up the manufacture date when I head out for lunch. Bought it a few months ago. Might take it in, better to have it fixed under warranty. Could also try resetting the ECU, just hate losing all my setting and presets. 😋
 

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Yeah I'd like to see it also. There's nothing listed anywhere on the internet and I checked with the service department. They checked with Hyundai direct and there isn't one. This is obviously a word of mouth fix from the Hyundai Engineers to the dealership.

My friend who works for Hyundai directly, says there nothing in writing either. Plus the NHTSA has no TSB listed either on the Veloster N except for this; https://static.nhtsa.gov/odi/tsbs/2019/MC-10167765-9999.pdf
https://www.aboutautomobile.com/Technical-Service-Bulletin/2019/Hyundai/Veloster/Equipment
They have a TSB our for injectors on this car. You might want to get it checked so they can swap them out under warranty if there is an issue. Mine had to be swapped. My whole engine did have to swapped as well but the injectors were first.

What's the manufacturing date on your car?
 

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Hey guys, like the title says. I am experiencing a slight hesitation when accelerating between 3500rpms and 4000. It happens most noticeably on 3rd gear pulls but not limited to that. Is this part of the stock ECU tune, or should I consider having mine reflashed/ disconnect the battery?

Anyone else notice this?

Thanks!



More description please.
Are you at part throttle, full throttle? Are you sitting at 3500, then hitting the gas to get up or accelerating at WOT and feeling the drop?
If it's happening at WOT, take it in for warranty repair. That should not happen.
 

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I wonder if this is what you are feeling (blue graph lines).

Have to click on the "dyno chart"

I don't have the down-pipe but after I installed the aFe intake that "hesitation" is gone.
 

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Yeah I'd like to see it also. There's nothing listed anywhere on the internet and I checked with the service department. They checked with Hyundai direct and there isn't one. This is obviously a word of mouth fix from the Hyundai Engineers to the dealership.

My friend who works for Hyundai directly, says there nothing in writing either. Plus the NHTSA has no TSB listed either on the Veloster N except for this; https://static.nhtsa.gov/odi/tsbs/2019/MC-10167765-9999.pdf
https://www.aboutautomobile.com/Technical-Service-Bulletin/2019/Hyundai/Veloster/Equipment
They have a TSB our for injectors on this car. You might want to get it checked so they can swap them out under warranty if there is an issue. Mine had to be swapped. My whole engine did have to swapped as well but the injectors were first.

What's the manufacturing date on your car?

I have the work order where they replaced the injectors but not sure what to look for as far as the TSB. Would it be on the work order? The service guy told me this and I dealt with a bunch of idiots so they could’ve just been making something up to tell me.
 

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The TSB is released from Hyundai. If it's on the quotation it will be listed at the top of the comments block.
In your case, they finally had to speak to a Regional Hyundai Engineer because of their ineptness and were told to do this. There's nothing in writing. If there was, it would become an open TSB listed with, NHTSA and there is no such thing at the moment.
 

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The TSB is released from Hyundai. If it's on the quotation it will be listed at the top of the comments block.
In your case, they finally had to speak to a Regional Hyundai Engineer because of their ineptness and were told to do this. There's nothing in writing. If there was, it would become an open TSB listed with, NHTSA and there is no such thing at the moment.
This attachment doesn't want to load so posted again.
 

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Thank you for post the information

Your dealership service called the Hyundai TechLine, which is the Regional Hyundai Engineers and they told them to replace them. I thought so.:smile: Plainly, you're dealership service didn't have a clue!:plain:

I'm going to advise you once again to, take the car to another dealership service, if you want to have someone you can trust. The dealership service you're dealing with, is inept sadly.:sad:
 
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