Major update:
Just passed!
I went to a fast lube place, thinking they would be cool.( I don't have a regular shop since I do my own work)
They were trying to fail me it seemed. Even checked my tint even though it's obviously legal, were looking under the car and all from the bay underneath...
On the stock downpipe you have one o2 sensor at the top right after the manifold and then one after the first cat
On the rv6 you have one at the top and then one right before the cat (first cat is deleted). That's why it usually throws the code even though it's catted you don't have a cat...
I think you're on to something because basically the code I'm getting p0139 is a slow response code, which means it's not getting enough gasses. Most likely because it's too far away in this angled defouler.
I've tried stock tune, hondata reflash, and vit tune with o2 on and they all have the...
It throws a code with the secondary o2 sensor on, even with a defouler in place.
So you're saying you can pass even with the secondary o2 not ready (off)?
Rv6 catted down pipe. So I'll pass visual, just wondering about the odb scan test.
I was trying to avoid putting the stock downpipe on and off every year.
NC requires it every year even if new. I'm just trying to figure out if I can get it through with a catted down pipe somehow and if this code means I need to replace my o2 sensor.
Edit: I'm pretty sure the o2 sensor is fine. It's just reading high from a "defective" catalytic converter. I'm...
2015 Civic Si with a rv6 catted down pipe
So I turned on my secondary o2 sensor but kept everything else on my tune the same and was going to get inspected but after driving around for a short while I got code P0139.
I'm reading that means the secondary o2 sensor is possibly bad?
I can't...
You were right it wasn't grounded properly and that's why it wouldn't turn on.
The fuse set up I used (23 for ignition and 10 for shut down power) does work, phew. It switches over to fuse 10 when you turn the car off which tells it to shut down, pretty cool.
That ground bolt back there is...