Modded 2013 G37x ECUTek tuned, been running fine with no problems since I purchased it at 48k miles, now at 65k. It came with the mods and tune.
Currently has: ECUTek Tune, TopSpeed Pro 1 Exhaust, Fast intensions resonated high flow cats, Stillen cold air intakes.

Have a had an engine service soon code off and on for a couple months now. I have tried to clean out my MAF sensors twice, I have replaced my downstream drivers side O2 sensor, and I have cleaned out my stillen intake filters.

Main code has been P2098 this entire time, and since having to daily it 30 miles to and then from work, its gotten progressively worse in the sense of a rougher idle, rumble and makes the car shake once or twice in my drive. Additionally the car sounds louder sharper but not in a good way. Car doesn't put down any power if I try and gas it, but it'll steadily climb. Exhaust flex pipe has some tears, one golf ball size whole in the flex pipe as well, so I am wondering if these problems are stemming from an exhaust leak. At this point I'm stumped, and I wouldn't even consider myself proficient and knowledgably enough to fix this myself, so I wanted to see if anyone has heard of these problems before and might know of a fix. Otherwise I am already planning on finding a local shop that will be able to access what is going on.