o2 simulators

[freakboy]

Ready to gut my Cats on my 04' w/4.0 ltr. can anyone tell me the best o2simulators to go with. I'm just tired of the headaches.

 

[ARK_SWAMP_RIDER]

I'm posting from my phone and don't have links. Don't waste your money on simulators, use some spark plug non foulers, you can get them at most auto parts stores. I can't remember the size, but a google search should give you some more info. I had several sets of simulators fail on my old Mustang, finally used the non foulers and worked like a charm for less than $5.