Limp Mode Thoughts

[cmo_93]

Was driving home pretty normally car went into limp mode. I immediately assumed TA's so I turned the car off and back on (last time that enabled me to get home until I could replace).

Limp mode came back immediately after restarting car. Car seemed rough around about 2k rpm at first but got it home pretty normally and didn't notice anything weird...(granted it was pretty busy and loud out where I was)

Back ground on car:
78k miles
Original Rod Bearings
Alex's ECU Tune
Primary Cat Delete
Remus Race Rear Section
Just changed spark plugs last week

Codes:
Catalytic Converter Conversion Bank 1
Catalytic Converter Conversion Bank 2
Combustion Misfire with cut-out cyl 3
Motor emergency program activated
Motor emergency program activated
Combustion Misfire with emissions deterioration Cyl 3


Hoping simply bad spark plug and or O2 sensors.

Wondering why they both presented at the same time.

Any ideas?

[nah dude]

If you're catless and have the O2 sensors coded out it seems odd that you'd be getting CEL for that.

[yidgyi]

Maybe spark plugs aren't torqued to spec. I had the "Combustion Misfire with emissions deterioration Cyl 3" on my 5th cylinder that popped up on my carly app. I replaced my coilpack in cyl. 5 and it never returned. I'd double check the spark plugs to make sure they're torqued. Could also be possible that you need to replace the coilpack in cyl. 3. I'd torque everything down to spec and see what happens. If the code still persists try swapping the faulty cylinder coilpack to another and see if the code follows the possible faulty coilpack is my guess.