B&b Midpipe+greedy sp2 exhaust
 

Do they have a holes on them to fool the cell?(for 02 sensors)

By midpipe you mean test pip with no cat? No. Thats why a lot of places will tell you its for off road only when they sell it to you.

Are you asking if a midpipe has a hole for the o2 sensor? If so, yes. At least mine does. This does not stop the CEL from coming on though...

yeah, should have o2 sensor bung.

Oh ok I was wrong. Thanks for the correct info guys.

OP, there's also no known method to fool the 02 sensor at this time so you'll get a CEL no matter what.

Yeah so I was told by Ray.