96blue

I installed the Pypes beast cat back system. I then had my muffler shop remove 4 of the six cats on my 96 gt. I thought I needed the eliminators but it turns out my tech replaced the pipe from just in front of the rear sensors to the front cats. Do I need to go ahead and plug in the eliminators or is my a/f ratio going to be correct with them plugged in to the pipe with the extra cats removed.

gt96stang

I had 4 of the 6 cats removed on my 96 too... You should only need to add MIL's if the CEL comes on...

nystateofmind27

the last oxygen sensors are only for cat. performance and do not affect the AF in any way as far as I know.

2000GT4.6

+1