[itsstock02]

So lately my car has been flashing the ses light and switching to map 4 after doing a 2nd or 3rd gear pull. It flashes like 10 times before going off. Im running an G5 iso jb4 on map 5 with no e85 currently. Other than DCI, the car is stock performance wise.

The car runs and idles fine. I can feel a slight miss when taking off first thing after cold starting. I cant load the engine too much at low speeds or you can feel it miss. After a couple miles, it all goes away. I was getting some bad misfires over summer (happened two times) on the first cold start in the morning. Havent had the problem since then.

I have brand new -12 index injectors and oem spark plugs that I plan on putting on over winter.

Why would I get a catless dp detected with oem downpipes?

[Mike@N54Tuning.com]

Looks like a faulty o2 sensor.

Mike

[itsstock02]

Would that be the post cat 02 sensors? Any way to tell what bank or should I just replace both?

[itsstock02]

Here are the codes when I was getting the bad misfires on cold starts. Has the same 2c7e code. So I will go ahead and replace the o2 sensors just to be sure along with the injectors and spark plugs.

[itsstock02]

One more thing to add. This bracket (#8) fell off the car over the summer and ive yet to put it back on. The bolt must of been loose because there is no damage underneath the car. Ive purchased a new bolt, but the bracket it attaches to (#7) needs to be chased because the threads are a little mangled.

Is it possible that without this bracket ive developed an exhaust leak and that is causing this problem? I dont hear any sort of exhaust leak under the car, but the exhaust does seem louder. IDK maybe its just me.