i just got great news, being that my town doesnt do emisions testing
and i can get inspected with no cats!!!

so ill be getting them off when i get my headers
but i know that damn check engine light is gonna come on
so im asking what is that part called that can trick the computer?
and if i can even use it.
and ALSOOO if i do use it and it turns the cel off will it come back on
if i have some other sort of problem(spark plug ect..)??

 

yikes. ur truck wont run well without cats. remove all 4 of them, and replace with 2 high flows. itll be as loud, better sounding, and youll get performance out of it.

 

oh crapppss did not know that haha
thank god for this site

thats wht i was going to do but wasnt sure if running no cats would hurt
it or anything but i just got that question answered aswell
thanx for the info man!

 

here to help buddy. wat year is ur truck? if u have 4 cats, remove them all, and replace with 2 high flow magnaflow cats part # 94106

and what do u have exhaust wise?

 

05 FX4 with no cats and got the o2 sensors bc i dont get any check engine lights and runs like crap? No it does not run like crap if anything it pisses people off for being soo damm loud.

http://www.youtube.com/watch?v=rpTkUBx0e94

http://www.youtube.com/watch?v=4hzCs...eature=related

http://www.youtube.com/watch?v=xaipu...eature=channel

 

its an 04 fx4 i got an x pipe with dual bullets
was thinking of getting those magnaflows but MIGHT get dynatech hi flows

and mhockey iv seen your videos! sounds good to me ha

 

Magnaflow Cats 94106 made my truck way louder.

http://www.youtube.com/watch?v=NcW0pIv9DgM

 

you already have a sweet set up. chop off all 4 cats, and run 2 high flows. youll be amazed at the difference. personally, i wouldnt run my truck without cats. some guys will, thats cool. your option man

also, if you want a louder choppier sound, take off the X pipe and add an H.

 

when you replace the 4 OEM cats with 2 hi-flows where do you mount the 2 other o2 sensors? i assume all 4 OEM cats have sensors.. right? i am looking to do this myself and I have the Maggie hi-flows with the bugs already welded into the cat, i just dont know where to mount the other set of o2 sensors, maybe in the pipe after the hi-flows? or is there only 1 set of o2 sensors for all 4 OEM cats?

 

yes, definately go with the 94106

 

there are 2 sensors. 1 for each cat. u have 2 sensors that are in the piping before the Precats. those read the air:fuel ratio. u then have 1 o2 sensor that are in each cat themselves. the sensor can be welded in the new high flow cat. leave the sensors before the precats when u chop those off, and stick the new (or old) o2 sensors in the new high flow cat. if you crawl under ur truck, ull know what im talkin about. look in the piping between the pre cats and the end of the headers on each side. you will see a sensor. and the 2 rear cats have a sensor in each of them, that you will definately see. only concern is i have an 03 and you have a NBS, but that should not matter.

 

alright thanx for the all the info man
ill keep the x pipe for now and see how i like it after i do all that.
also do those 94106's have the holes in them already for the sensors?

 

yes they do.

 

Nice! Thanks Bro

 

one last question.
if i were to get these
http://www.jegs.com/p/Dynatech/Dynat...53324/10002/-1
i woud have to make the holes in these right?
and if so would a muffler shop do this?