Emissions with Long tube headers and cams

[theRedStorm]

Is the o2 sensor supposed to read N/A with the spacer installed?
It reads Not ready before the drive cycle is done
but when the drive cycle completes, it's reads N/A
I only have one incomplete. Is this good enough to pass emissions?

 

[07 Boss]

It should read OK or incomplete. Where I'm at you can have one incomplete. I believe when it says N/A it is turned off.

 

[theRedStorm]

It's really strange. When I start my car, it reads incomplete. After driving for 15 minutes, it reads N/A. Possibly due to bad spacers?

 

[theRedStorm]

Figured out the problem. My O2 sensor spacers came with Mini cats in them and a cover. It seems that with those in place, the Rear O2 wasn't getting enough of a reading resulting it in reporting N/A since no post cat signals were being to the ECU. I removed the cap and mini cats, and bam it works like a charm. So far it's reading INC consistently. I'll try to finish a drive cycle tomorrow and hopefully everything works

 

[GlassTop09]

Good catch! Hope all checks out from here.

 

[07 Boss]

Figured out the problem. My O2 sensor spacers came with Mini cats in them and a cover. It seems that with those in place, the Rear O2 wasn't getting enough of a reading resulting it in reporting N/A since no post cat signals were being to the ECU. I removed the cap and mini cats, and bam it works like a charm. So far it's reading INC consistently. I'll try to finish a drive cycle tomorrow and hopefully everything works View attachment 70211

Did you get those from BigDaddie's? Mine don't look like that.

 

[theRedStorm]

Did you get those from BigDaddie's? Mine don't look like that.

I got mine from eBay. Comes with Mini cat. The spacer worked for me but I guess it didn't like the mini cat

 

[theRedStorm]

Thank you all for the help. I passed emissions with flying colors

 

[theRedStorm]

 

[07 Boss]

You need to frame the inspection report and put it in the garage so your car can be proud of it's milestone achievement. Kinda like my college degree on my office wall.

 

[GlassTop09]

Good deal!

 

[travelers]

Congrats on passing.