Removing Rear Cats
03-09-2007, 11:29 AM
#11
5th Gear Member
Join Date: Mar 2004
Location:
Posts: 3,594
RE: Removing Rear Cats
it is illegal to remove functioning cats on any post 1973 vehicle in all 50 states. yes the federal gov't can issue a $25,000 fine for it. some states don't have emissions laws and don't enforce it. in my area we have emissions and no garage will remove the cats unless an CARB CERTIFIEDcatted H-pipe or X-pipe is replacing it.
just to the south of me there are 2 counties in my area of PA that don't have emissions and they will remove cats IF you are a resident of those counties
just to the south of me there are 2 counties in my area of PA that don't have emissions and they will remove cats IF you are a resident of those counties
03-09-2007, 12:02 PM
#12
4th Gear Member
Join Date: Jan 2007
Location: Eureka, Ca.
Posts: 1,758
RE: Removing Rear Cats
ORIGINAL: MustangMike2001
Would the car still pass emissions with just the front two cats on it?
Would the car still pass emissions with just the front two cats on it?
Hell no but luckily we don't have smog checks up here. If we ever do the cats will go back on.
03-10-2007, 10:48 PM
#15
5th Gear Member
Join Date: Mar 2004
Location:
Posts: 3,594
RE: Removing Rear Cats
ORIGINAL: MustangMike2001
Would the car still pass emissions with just the front two cats on it?
Would the car still pass emissions with just the front two cats on it?
03-11-2007, 12:59 AM
#17
2nd Gear Member
Join Date: Sep 2006
Location: Odenton MD
Posts: 441
RE: Removing Rear Cats
ORIGINAL: cobra232
yes the car will pass a smog check without the rear cats as long as you keep the rear O2 sensors in place
ORIGINAL: MustangMike2001
Would the car still pass emissions with just the front two cats on it?
Would the car still pass emissions with just the front two cats on it?
03-11-2007, 03:34 AM
#19
5th Gear Member
Join Date: Mar 2004
Location:
Posts: 3,594
RE: Removing Rear Cats
ORIGINAL: Sparks232
So if you take the rear cats out...and keep the rear O2 sensors in place it wont kick any lights on?? and i really dont want to have to change out my MAC cat back exhaust, but fastfall90 said that mac doesnt sound that good with a non-catted setup...anybody else heard a MAC system without cats? and can any muffler shop custom make me a divorced setup? and how is the sound of the exhaust going to change if i go divorced... well lets say for now i leave the cats on. if i just go divorced is my exhaust going to really sound any different? or will i have to do something with the cats for it to make a difference in sound.
ORIGINAL: cobra232
yes the car will pass a smog check without the rear cats as long as you keep the rear O2 sensors in place
ORIGINAL: MustangMike2001
Would the car still pass emissions with just the front two cats on it?
Would the car still pass emissions with just the front two cats on it?
going divorced will make it alittle deeper and alittle louder but your better off removing the rear cats. it will sound Ok like that even though i don't care for MAC's. they will buzz at higher rpm's no way around that with MAC mufflers
03-11-2007, 03:58 AM
#20
2nd Gear Member
Join Date: Sep 2006
Location: Odenton MD
Posts: 441
RE: Removing Rear Cats
ORIGINAL: cobra232
taking the rear cats off and still using the rear O2 sensors will not throw a check engine light as long as the O2's are not further than 12" behind the first cats.
going divorced will make it alittle deeper and alittle louder but your better off removing the rear cats. it will sound Ok like that even though i don't care for MAC's. they will buzz at higher rpm's no way around that with MAC mufflers
ORIGINAL: Sparks232
So if you take the rear cats out...and keep the rear O2 sensors in place it wont kick any lights on?? and i really dont want to have to change out my MAC cat back exhaust, but fastfall90 said that mac doesnt sound that good with a non-catted setup...anybody else heard a MAC system without cats? and can any muffler shop custom make me a divorced setup? and how is the sound of the exhaust going to change if i go divorced... well lets say for now i leave the cats on. if i just go divorced is my exhaust going to really sound any different? or will i have to do something with the cats for it to make a difference in sound.
ORIGINAL: cobra232
yes the car will pass a smog check without the rear cats as long as you keep the rear O2 sensors in place
ORIGINAL: MustangMike2001
Would the car still pass emissions with just the front two cats on it?
Would the car still pass emissions with just the front two cats on it?
going divorced will make it alittle deeper and alittle louder but your better off removing the rear cats. it will sound Ok like that even though i don't care for MAC's. they will buzz at higher rpm's no way around that with MAC mufflers