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To me this is a temporary fix, we need to find a solution to get the connection more stable to the headunit.

Good to know. Do you have Honda Sensing? Also if I increase or decrease the speed using the wheel controls it will fluctuate.

That may not be entirely accurate as I can get my Ktuner Bluetooth module to connect most of the time. So it has to be certain units that wont work. We just haven't found it yet.

Update: The Ktuner module doesn't always connect to the head unit via Bluetooth. Its pretty random. Sometimes it will connect on startup just fine and other times it will connect after the head unit displays the right rear view camera when making a turn. I have the Tuner View app auto launching...

Update: I can get the car to maintain speed perfectly if I first use the accelerator pedal to reach the desired speed then engage the cruise control. If you engage the cruise control without the pedal/accelerator it will not maintain properly and fluctuate 1 mph every few seconds. I'm curious to...

Update: I can get the car to maintain speed perfectly if I first use the accelerator pedal to reach the desired speed then engage the cruise control. If you engage the cruise control without the pedal/accelerator it will not maintain properly and fluctuate 1 mph every few seconds. I'm curious to...

I was unable to get this OBD tool to connect to my head unit. I have a 2018 Civic Hatch. Just wanted to let you know.

Hi Axatax, yes there is no problem with leaving the OBD BT dongle plugged in all the time. I use the Ktuner that way with no issues.

Awesome! Thank you, In that case I will order this one.

Does this one show all the monitor data including the IAT?

No Hondata or Ktuner will not fix this issue. I bought a Ktuner thinking it might fix it but it did not. It was not my only reason of buying one but I was hoping it would fix it. Also there is a TSB out for your 2016 surging issue...

Update. This one I have tried and would not even connect to the Civics OBD port correctly. https://www.amazon.com/gp/product/B005NLQAHS/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

Following. I would like to have a cheaper OBDII device as well.

Yes, I have the ECO button set to stock tune and it does the same thing. It also did it before the tune. I would also like to state the car did NOT do this when I first brought the car home. Thanks

Would you guys say this is normal behavior even at 35 mph? My 2018 Hatch cvt cannot hold a steady 35 mph with the cruise on. The rpm does the same thing 100-200 rpm fluctuations until it drops 1 mph and then has to speed back up to reach desired speed again. It is really annoying and would be...

I'm updating all of my posts, My 2018 Hatch cvt cannot hold a steady 35 mph with the cruise on. The rpm does the same thing 100-200 rpm fluctuations until it drops 1 mph and then has to speed back up to reach desired speed again. It is really annoying and would be better if it held the speed...

I'm updating all of my posts, My 2018 will not hold speed even 35 mph.

I'm updating all of my posts, My 2018 does this at 35 mph as well not just at highway speeds.

I agree it will take Honda noticing there is a problem, however this does require a tech at a dealership to take notice first and actually talking to Honda assuring them that it is a problem to begin with. Maybe the tech was having a bad day the second time around. I have a phone call planned...

Are there any 2018 service bulletins out?