[aren93]

Hey guys I installed my catless downpipe yesterday, plugged in the o2 sensors and all that. It's been a day and my check engine light has not came on. I'm not sure if this is good or bad. I'm glad it's not on, but worried if I did something wrong? Any ideas? lol

[Walker16]

Mine never came on after my dp install either. I'm guess the cobb has the dp fix built in.

[Schmidty335i]

Originally Posted by aren93

Hey guys I installed my catless downpipe yesterday, plugged in the o2 sensors and all that. It's been a day and my check engine light has not came on. I'm not sure if this is good or bad. I'm glad it's not on, but worried if I did something wrong? Any ideas? lol

after i installed my catless dp i decided to turn my jb4 off for daily driving thinking i might save on gas. had it off for a few days then one day i was driving home from work and i got a check engine light. scared the hell outta me then i remembered that i turned my jb4 off. turned it back on and it instantly went away. it might just be a matter of time before it turns on, mine took a little while.

[aren93]

Originally Posted by Schmidty335i

after i installed my catless dp i decided to turn my jb4 off for daily driving thinking i might save on gas. had it off for a few days then one day i was driving home from work and i got a check engine light. scared the hell outta me then i remembered that i turned my jb4 off. turned it back on and it instantly went away. it might just be a matter of time before it turns on, mine took a little while.

Ahhh ok yea maybe it will turn on in a few days then. Well either way I will be installing my Jb4 within these few days so it won't matter lol. I was just curious. Thanks

[Schmidty335i]

Originally Posted by aren93

Ahhh ok yea maybe it will turn on in a few days then. Well either way I will be installing my Jb4 within these few days so it won't matter lol. I was just curious. Thanks

no problem man, if you installed something wrong you would have had some code come up for sure since the dme wouldnt be getting any signal from the sensors. hopefully you get the jb4 installed before it comes up, i dont know about you but with me a CEL even when i know what it is for just doesnt sit right with me haha

[aren93]

Originally Posted by Schmidty335i

no problem man, if you installed something wrong you would have had some code come up for sure since the dme wouldnt be getting any signal from the sensors. hopefully you get the jb4 installed before it comes up, i dont know about you but with me a CEL even when i know what it is for just doesnt sit right with me haha

Yeah I would probably be always worried if my CEL was on lol. Thanks for the info. Btw im supposed to plug in the O2 sensors to the new downpipe right? Or do you have an option of not doing so.

[Schmidty335i]

Originally Posted by aren93

Yeah I would probably be always worried if my CEL was on lol. Thanks for the info. Btw im supposed to plug in the O2 sensors to the new downpipe right? Or do you have an option of not doing so.

no problem and yes you are suppost to install both O2 sensors into your new downpipe.

[aren93]

Originally Posted by Schmidty335i

no problem and yes you are suppost to install both O2 sensors into your new downpipe.

Ok good thing I did lol

[Akleifg]

I need a fix to pass state inspection with a catless DP on a n55 if anyone knows.

[Johnny Boost]

Ya it's normal to not get a CEL at first. When you drive your car around more, it will eventually will come on. I removed my tune for the vanos recall and the CEL never came on. That's because the dealership is only 2 miles away.

[Schmidty335i]

Originally Posted by Akleifg

I need a fix to pass state inspection with a catless DP on a n55 if anyone knows.

only way you are going to pass is if you have a shop that will pass you or you swap out the cat with the oem one. sucks but that pretty much sums it up.