If i go to install a set of test pipes on the car,will the O2 extender(cel fix piece) keep the check engine light from coming on the car?
I know unless i get the 2 rear o2 sensors deleted in the tune,it will throw a light without the cel fixers,but are they alone enough?
I know alot of you are running test pipes,just looking for some feedback,thanks

 

it will only work on 2004 and earlier cars. after that its hit or miss, most often cel.

 

Why would it be any different for the later models,such as an 05?

 

The software engineers have written better code to catch Felony abusers violators of Federal Clean Air Act.