3.3TT Nasty stuttering sound/vibration when accelerating fast

[Knowa]

Just got back from a road trip up to Sandusky, roughly 350 miles round trip and didn't notice any issues but now that I am back home, I've noticed my car is behaving very oddly.

Normal street driving is fine, but if I try and accelerate quickly, once the car gets boost and hits 3000-ish RPM I get this absolutely nasty sounding stutter, and it feels kinda like when your ABS goes off without it actually braking. I pulled logs on my JB4 and I don't see anything that would indicate plug wear like a lot of cylinder retarding, but they are probably at the end of their life (around 10k miles on these plugs). I'll attach a copy of my logs to see if any of you see anything that I am missing.

I can't really pinpoint where the sound is coming from because I am worried about sending it too hard while diagnosing and making it worse. I did see someone with a similar sounding issue say that after their roadtrip their gas meter was wayyyyy off and they were actually out of gas even though their dash said they had roughly 50 miles left. I will try filling up after work today as well to see if I have the same problem. I've never really experienced something like this before so if it's something as simple as not having enough gas in my tank I would be incredibly surprised.

Car Info:

2018 GT2 - 45000 miles
JB4 map 2
Denso step 2 plugs (Installed at 36441)
Injen Intakes
Borla Catback

 

[Knowa]

Here is a video I recorded just now of me doing a light acceleration from roughly 45 to 65 mph:

IMG_0663

 

[Snicklefritz]

10,000 miles is what you expect out of a set of sparkplugs? that seems way short of what you should get. lately there have been a few more stories of this, with and without jb4. I'll bet you have at least one coil pack that has gone south.

 

[Knowa]

10,000 miles is what you expect out of a set of sparkplugs? that seems way short of what you should get. lately there have been a few more stories of this, with and without jb4. I'll bet you have at least one coil pack that has gone south.

Everything I've read in regards to running a jb4 recommends replacing your plugs every 8-12k miles when running map 2. Now, last time I replaced them they still looked fine, but I was just going off what I had read.

 

[NS_Stinger]

I'd definitely start by replacing your plugs. If you can tell they're at the end of their life that's a good place to start and you're just about due anyway.

 

[Kazz]

Plugs and/or coils. Check for OBD2 codes to tell you which cylinders.