??o2??

[4g63swap]

I just wondering if you have to have the o2 sensor in the exhaust or can that be removed? I have a 3" downpipe with cat removal and don't what to drill and tap a hole. other question can I use that same o2 sensor for the one after the turbo or are they diferent. with out the second o2 sensor will that cause any problems?

thanks
4g63swap

 

[1fast97gsx]

you should prolly throw a check engine light if you don't have it plugged in right. Even if you do plug it in you most likely will get the light though since you don't have a cat. Just drill and tap the hole ... what's the big deal?