how many cats does a 98 f150 have and if more than 1 can you take out all but one is that illigal to remove any at all? just tring to get louder sound cuz i have upgraded 3 times and still not getting what i want

 

they have 4, i believe you can take out 2

 

Hi, I have a 98 with a 5.4 and I just got the two rear cats(the main ones) cut out. I already had true duals with 12" glass packs, now its quite a bit louder when I'm on it, and has a lot throatier sound. I'd say go for it.

 

thanks i had herd that they had 4 and you can take 2 out but wasnt sure i just want that loud chevy straits sound.

 

take out all four, put int wo magnalflow highflows. throw no codes, great sound

 

hey, I have had my rears out for about 2000 miles now and I have not thrown a code yet. I have heard from others on this site that you are safe on a 97-99 truck. Good luck.

 

+1 to that

 

went to the shop that I have gotten all my work done at and explained that there are 4 cats and asked if two could be taken out and leave 2 and they said they can't cuz its illegal is this true or are wrong? Thank for the feedback guys

 

It is illegal for "THEM" to modify the CAT setup from factory. However, "NORMALLY" if they didn't see nothing, they don't know nothing. Get the drift?

Cut'em out, put in some flex pipe, and take your stuff to the shop and say it's broke fix it. It is legal that they fix a broken cat. LMAO If you are going through the trouble, cut them all out and go with the maggie high flows. Your truck will thank you for it!

 

Get rid of the 4 stockers.
Put in 2 high flow cats...It will make a world of difference!!

Phil