I'm putting on a catless downpipe, and I'm going to disable my rear sensor with HPtuners. I'm wondering if they'll detect it when I go to the emissions test and they scan my car. Anyone know?

 

i think it will read 400 which means it isnt working or connected

 

Damn, that was a fast reply! So what do all the people running catless do about emissions testing? Put the cat back on? Do the spark plug anti foulers actually work?

 

ive had the anti fowlers work before on my buick regal GS. you may need to double stack them though

 

They don't work on the cobalt. Not enough room for them to fit without cutting part of the car up.

 

you mean o2 simulators or o2 spacers?

they work fine pm hockeyman0920 and he can tell you where he got them

 

if they are turned off in hp tuners they wont

 

if they are turned off the code wont set. basicly when you go through the emmissions test they look at whats called global generic OBDII, wich shows them any emmissions related codes, system moniters and will show a code if there is a code in a system (such as p0700- fault in trans controller). all they are going to look at is to see that any moniters that are supposed to be set are and that you have no codes.

 

hmm good to know

 

I tried, they physically will not fit in the exhaust channel with the o2 sensor.

 

Would a right angle fitting help out with the lack of space?

http://weapon-r.com/...&product_id=6219

 

I don't see why it wouldn't.

 

they search for codes ONLY, it will not pick up wether you have disabled it or not, you should have 0 problems!! (Certified Massachusetts State Vehicle Inspector)

 

this is good to know

 

Thanks for the info guys!

 

no problem

 

I agree. (fellow MA licensed inspector here) the emissions plug in will detect a possible fault code (if there is any in history) but as long and the check engine light is not illuminated, there shouldn't be an issue. I have had cars that fail in one or two of the categories that are scanned for inspection but since they did not have a check engine light on, they passed with flying colors.

When i get my catless DP, I'll get the rear O2 disabled and plug my car into the inspection machine at work. I will give you guys a definitive answer when i get the parts and tuning.

 

keep the S license workin bro!!! LOL