2018 CTR Misfire

[Ralleyered18]

Attached is my datalog. Car misfires when you first start driving after warming up, and when you get into boost. Sometimes it’s perfectly fine. PRL HVI, PRL IC and Charge pipes, Hondata basemap. Everything else is stock besides a muffler delete. And help would be appreciated!
Edit: car is on the recall list for fuel pump. And threw a p0302 code. Sparkplugs look good, only about 4,000 miles on new oem. Swapped coilpacks around to see if the misfire moves, but it wouldn’t throw a cel while missing during this datalog

[Hondata]

Running lean into boost. Made worse by running rich the rest of the time so that the fuel trims are negative.

[Ralleyered18]

Any ideas on how to correct?

[Ralleyered18]

Could this be signs of the pump failing? Commanded pressure is 2900 but it only sees 2870~ most of the time.

[Hondata]

Fuel pump is fine. Probably the intake messing up the air flow readings but check all the charge pipes and intercooler connections as well.

[Ralleyered18]

So essentially you’re saying there’s a potential boost leak, and the car is trying to correct the fuel trims to compensate? Could this be something tune related? I have the PRL HVI with the big bore maf housing.

[Hondata]

I do not believe that it is a boost leak, but it is possible since the IC was changed. First step is to compensate for the HVI mis-reading the air flow.

Yes, we know we have a calibration for that combination but people don't realize that if I get ten different vehicles all with the same intake then I'll probably need 5 different calibrations just for the AFM. None of the intakes have indexes and steps like Honda uses to ensure they go together exactly the same way when installed. Many intakes have odd resonances and non linear behavior which makes them mis-read the air flow.

[Ralleyered18]

I’ve inspected all couplings, and the maf housing itself, nothing seems out of the ordinary, how would I go about compensating for the HVI misreading?

[Hondata]

Tune the AFM table.

[Ralleyered18]

I replaced the PRL intake with the stock intake, and flashed the ecu back to stock. Car still has a misfire. I attached the datalog from the stock tune. It seems the car is still lean into boost. Any ideas what could be causing this? Seeming to be not tune related since it’s doing it in its stock form now.

[Hondata]

That's a good way to eliminate the changes you made from being the cause.

A lot of channels do not datalog when completely stock, so you can try the 'factory settings' for better datalogging.

If you checked plugs you probably also checked for water in the spark plug tubes, which can cause misfires. Also check carefully the plugs for any cracks in the insulation.

[Ralleyered18]

On my drive to work this morning the car was missing horribly, finally threw another cel. The misfire moved to cylinder 3, following the coil pack that was originally on cylinder 2. Going to pick up a new one this evening and see if that solves the issue. I appreciate all the help

[Ralleyered18]

Coil packs, sparkplugs, and maf sensor were replaced, car still misfires in boost. Runs perfectly fine out of boost. Stock tune, basemap, it makes no difference. I’ve checked for vacuum leaks. I’m at a loss, if anyone has any information at all it would be greatly appreciated.