Thanks. I called in today to just some different shops trying get their .02 on doing the work. One guy said there was a sensor in the middle of the second cat? And he also said that the check engine light would come on? Just wanting to know if this guy knows what he's talking about. Thanks

 

I have the same problem with my cats, I still have the stock ones on and is looking to get high flows but even with the one stock cat with a sensor it keeps tripping my engine light.. sometimes its on and sometimes its off. So im wondering also what exactly to do I need to do with this sensor if I get some high flows

 

False. 2004 - 2005 4 cat systems the rear cat is mounted after the rear O2 sensor. Certain '97 - '03s have them in the rear cat and others have them after. I imagine that depends on emissions packages.

 

Yeah he also said that the magnaflows wouldn't even filter the air like their supposed to? I'm sure he doesn't know what he's talking about, but I was just wanting to see what some other people thought after they put their 94106's on.

 

Yes he does not know what he is talking about. Hes more encouraging you to not modify your converters. Magnaflow cats work perfectly fine when you get the right models with the proper GVWR and pipe size.

 

Whew! That makes me feel better! Thanks for the info. I should have them on within the next couple weeks!