AyePekkz
Senior Member
- First Name
- Charles Meyer
- Joined
- Feb 11, 2021
- Threads
- 2
- Messages
- 170
- Reaction score
- 35
- Location
- North Carolina
- Vehicle(s)
- Honda Civic 2016 Sedan
- Thread starter
- #1
Have been having a bunch of misfiring issues with my car recently only at WOT.
Powerband feels like it breaks up while under medium to heavy acceleration.
I daily the car pretty heavily; do a lot of medium to heavy acceleration and a lot of highway commuting (wot probably twice a week before my issues).
My touring has FBO minus intercooler and turbo (both are stock), I use flex fuel as well, and have a custom e30 tune from Drob that I daily with.
Here's what I've done to narrow done the issues:
- Changed spark plugs twice
- Changed coils
- Changed fuel injectors (cleaned intake manifold and throttle body during process)
- Used seafoam fuel cleaner
- Compression tested all 4 cylinders (got 150psi on all cylinders)
- Reverted back to stock tune and all stage 1 (16.5psi), 2 (18psi), and 3 (21psi) ktuner tunes
- Had trans oil changed about 6months ago
- Oil was changed a couple weeks ago
I have logs if anyone with excessive tuner knowledge would like to take a look at (I am a novice, so I slightly understand AFR and such but not as in depth). Pretty sure the car runs rich even whilst cruising but AFR tends to stay around 14.7 from what I've seen from the logs might be missing something.
In regard to the tunes, only ktuners 21psi tune and Drobs tune (21-22psi) cause misfires at WOT. All other tunes (18psi<) that I have tested run perfectly fine at WOT All of the logs that I have collected are labeled and attached in the .zip.
I'm beginning to think it may be a fuel pump or sensor issues somewhere in the car (TPS, MAF, O2, etc...). If not that possibly the cvt starting on its way out? I am at a loss for now, any help is appreciated. Any questions for clarification I will try to answer ASAP. Thanks all.
Powerband feels like it breaks up while under medium to heavy acceleration.
I daily the car pretty heavily; do a lot of medium to heavy acceleration and a lot of highway commuting (wot probably twice a week before my issues).
My touring has FBO minus intercooler and turbo (both are stock), I use flex fuel as well, and have a custom e30 tune from Drob that I daily with.
Here's what I've done to narrow done the issues:
- Changed spark plugs twice
- Changed coils
- Changed fuel injectors (cleaned intake manifold and throttle body during process)
- Used seafoam fuel cleaner
- Compression tested all 4 cylinders (got 150psi on all cylinders)
- Reverted back to stock tune and all stage 1 (16.5psi), 2 (18psi), and 3 (21psi) ktuner tunes
- Had trans oil changed about 6months ago
- Oil was changed a couple weeks ago
I have logs if anyone with excessive tuner knowledge would like to take a look at (I am a novice, so I slightly understand AFR and such but not as in depth). Pretty sure the car runs rich even whilst cruising but AFR tends to stay around 14.7 from what I've seen from the logs might be missing something.
In regard to the tunes, only ktuners 21psi tune and Drobs tune (21-22psi) cause misfires at WOT. All other tunes (18psi<) that I have tested run perfectly fine at WOT All of the logs that I have collected are labeled and attached in the .zip.
I'm beginning to think it may be a fuel pump or sensor issues somewhere in the car (TPS, MAF, O2, etc...). If not that possibly the cvt starting on its way out? I am at a loss for now, any help is appreciated. Any questions for clarification I will try to answer ASAP. Thanks all.
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