Hondata

Links for plugs in update post from a couple of minutes ago:

https://www.ngk.com/ngk-92411-dilkar8p8 ... spark-plug (OEM)
https://www.ngk.com/ngk-95112-ilzkar8h8 ... spark-plug (#1)
https://www.ngk.com/ngk-95660-ilzkar8j8 ... spark-plug (#2)

Update:
Car would NOT start a couple of days ago. Replaced the spark plugs (again) and it fired right up. However, it still has the "misfire." Plugs I removed were OEM purchased from Honda (NGK 92411 DILKAR8P8SY). The plugs were only two months old, and based on the heavy deposits, it looks like ...

I forgot to add to the last post that I'm also having a hard time starting the engine now. It really struggles and seems to only fire on a couple of cylinders for a few seconds then the others start to fire with all four eventually working.

Ok so I've replaced several parts, but I'm still getting what I'm calling a misfire, though it may have a more appropriate name. This is the same issue that my original, and all subsequent posts are about.

I've replaced:
Low pressure fuel pump (w/ Hondata pump)
Fuel Injectors (OEM - Honda ...

Thank you! Alright, I just ordered a full set of ignition coils (Hitachi). Should be here in a day or two. I can tell you that it was 100% NOT my fuel injectors as recommended by my local Honda dealership... Just shelled out $1,500 for that today and it literally changed nothing so now I have a ...

Disregard original post, issue is resolved.

Car still hasn't blown up, but still having the same problems. Can someone please take a stab at recommending something other than what Hondata told me because their advice was absolutely no help.

Update: I reinstalled the USB driver and now it's working... I think... I'll get back to you.

Connected my FlashPro to the computer today fully expecting for the firmware to update as I haven't connected it in a few months. I made sure before starting that I had the latest version of FlashPro Manager. When I connected the USB cable, it said it would update the FlashPro firmware, but then ...

A little late, but thank you for the answer. That fixed the issue as I'm sure you already know since the base flex calibration now has that disabled.

Follow up question:

Do you ever intend to create mods for the 10th Gen Accords?

I would literally pay for mods and updated calibrations at this point. If you charged a subscription fee for access, I would pay.

Although I'm sure Hondata will give 10th Gen Accords some love in the future, for right now I need a little help and I'm hoping one of you either has something already, or can work some tuner magic.

What Hondata system: FlashPro
What vehicle: 2019 Accord Sport 2.0T 10AT
Hondata system serial number ...

Is your ethanol content of 32% accurate based on what you have put in the vehicle?

You're running large negative fuel trims - up to -25%.

Go back to E10. Disable ethanol. Check fuel trims and if necessary adjust the AFM to get them correct.

Then enable ethanol.


Forgive me but I have no idea ...

Yes, 32% is about right.

Those fuel trims are what is in the base "flex" calibration.

Also, something I noticed is the throttle plate is very erratic sometimes. Not sure if this has anything to do with my problem.