Whats up guys? I'm new to the forum so please cut me some slack lol. I have a quick question. I have a 98 2WD expedition and want to remove the pre-cats. I have already replaced the rear cats with some magnaflow high flows but I was wondering if I could completely remove the pre-cats without running a CEL like you can on the 97-04 F-150's (or so I've heard you can).

Thanks and greetings to all.

 

anybody have any ideas?

 

Remove the pre-cats and place the hi-flows directly where the pre-cats used to be. Then move your secondary o2 sensors directly behind the hi-flow cats.

 

^X2...precisely what I did and no probs. GL

 

thanks guys. I have high flow cats on already but they're in the spot were the main cats were. would this make any difference?