stillen header with downpipe

[ajdgotskillz]

I have a 2006 nissan sentra ser I just installed a stillen header with downpipe which eliminates the cat and i have a stillen exhaust and my car has a high sound it sounds like a civic anyone has this installed on their car and does it sound like a bumble bee???

[nametakennow]

Not sure if the Stillen has a resonator, but you're not the first person to notice this. Pretty much all SE-Rs get buzzy with a header and exhaust.

[NSR_s30]

It sucks. Although you could always see if a resonator will quiet it down or at least change the tone so it's like a swarm of bees

[jbarbaresi]

Not sure if the Stillen has a resonator, but you're not the first person to notice this. Pretty much all SE-Rs get buzzy with a header and exhaust.

good to know.

[nametakennow]

The new ones may not do it as much. I've yet to hear one. They redesigned a lot of the engine, so it should sound different. I've always been surprised that the QR buzzes as much as it does. The SR is very throaty and the QG is pretty mellow.

[ajdgotskillz]

yeah guyz it didnt have a resonator i put one on there and it sounds a lot better it has a more deeper sound. But my damn search engine light came on a code saying that my air fuel ratio is having a slow circuit response? What do i do?? A friend told me to put a o2 spacer cuz the stillen simulator wont work?

[nametakennow]

Do you have your second O2 sensor behind the cat or a spark plug de-fouler on it? The O2 reading on the second sensor must be "cleaner" than the first sensor for emissions purposes.

[ajdgotskillz]

my o2 sensor is not behind the cat i have no cat i eliminated the cat by putting a header with a downpipe the stillen header had a spot for the o2 sensor on the header there are two o2 sensors on my car and they were both on my header

[ajdgotskillz]

oh k so i finally fixed the bumble bee sound on my ser by adding a resonator now im having a problem with my search engine light it came on after i put on a stillen header and a downpipe stillen gave a little black box thats supposed to not make my engine light come on but it still did and the code is saying that i have a slow air fuel circuit or something like that how can i fix this too make my search engine light go away some people say i should use o2 sensor spacers and others say spark plug non foulers any suggestions out there on what i should do because i hate that little yellow light it makes me think something bad is wrong with my ser?????

[nametakennow]

I'd go with the spark plug non-fouler trick. Google it, it's pretty easy.