Hi all, 04 zhp w/155k, sharked, afe intake. List of service in last 25k:
V/c and gasket
Ccv
Thermostat and water pump
Ofh gasket
Vanos seals
New plugs @ 120
Gas disa
Maf @ 125k

So here the problem that has me and my indy stumped. I'm throwing codes for banks 1&2 cats bad (cat problems usually show bank 1 or bank 2, rarely borh simultaneously). Symptom is major power loss from 4-5 k, power returns at 5 k. We've double checked all mechanicals and everything appears ok. Cat flow readings look ok.. Software? Shark? Car has updated dme... Thanks in advance

Sent from my SGH-T989 using Tapatalk