Hey guys,

I'm about to install some Maggie hi-flow 94106's in my 05 fx4. I have the 4 cat setup and I'm going down to the 2 hi-flows for more sound. The shop says they will do it but they tell me I'm gonna need o2 extensions for the rear o2 sensor so I can mount them in the pipe 4-6 inches behind the hi-flow. Now I know they can install them far forward and use the factory wire harness but not gonna argue with the guy and tell him that there are hundreds of guys who have done this no problem. Im just gonna buy the 30.00 part and make it easier and less of a headache.

Questions is what is the part and number?

I have heard it's the BBK 1676, but I read it didn't fit someones factory o2 harness and they had to modify the end of the connector. Do I just have to break the guide tab off on them for them to fit? Anyone that is using o2 extensions or has some info would be appreciated.


Thanks!!

 

when I installed my obx LT's/w cats I used those BBK's and had to trimm a verry small tab with an knife. just go under and unhook the harness and put the extender beside it and you will see the 1mm tab that needs to be shaved. Real simple took 30 sec.