Rear Cat

Reply Subscribe

Thread Tools

Search this Thread

May 28, 2003 | 09:22 PM

crazyecto2005

Thread Starter

Freshman User

Joined: Apr 2003

Posts: 28

Likes: 0

Rear Cat

What exactly does it do? Is it actually a catalytic converter or is it just a resonator? Somebody told me it isnt reallya cat so i was just wondering.

May 28, 2003 | 09:49 PM

nitemandick

Freshman User

Joined: Mar 2003

Posts: 33

Likes: 0

From: Upstate New York

Rear Cat

Its a real cat. it does the same job as the front one.

Jun 5, 2003 | 02:56 AM

TOBOY

Junior User

Joined: May 2003

Posts: 67

Likes: 0

From: Toronto,ON, Canada

Rear Cat

Ive always wondered why Fords put 2 cats in line when it could pass as emmission test, with fliying colors I might add, utilizing 1 cat. How I know this, I punced out the rear cat of my Explorer when it was making noises.... That's all over cause I had the cat replaced with a (single) high flow cat; when the front one went on me.

Jun 5, 2003 | 03:01 PM

MrDeath8666

Senior User

Joined: Jan 2003

Posts: 236

Likes: 0

Rear Cat

I cut my rear cat off, and most likely going to replace it with a 3" pipe to my muffler. Are you sure itll pass the emissions test with just the first one? Right now it cant pass any way tho until i get my egr valve replaced along with a few other things. But i was also thinkin bout just removing the 1st cat too and just running one high flow cat.

Last edited by MrDeath8666; Jun 5, 2003 at 03:08 PM.

Jun 5, 2003 | 03:58 PM

akford351

Posting Guru

Joined: May 2002

Posts: 1,589

Likes: 1

From: AK

Rear Cat

The front cat is basically a pre-heater for the second cat... you won't pass emissions with that alone. You can take it off and run one highflow and you'll pass easily. Magnaflow makes good highflow cats.

Jun 5, 2003 | 04:35 PM

MrDeath8666

Senior User

Joined: Jan 2003

Posts: 236

Likes: 0

Rear Cat

Alrighty.....do they got dual inlet cats or would i have to get a new y-pipe too?

Jun 5, 2003 | 10:11 PM

bos3kd

New User

Joined: May 2003

Posts: 9

Likes: 0

From: Ohio

Rear Cat

Is the First cat just a pre-cat, or are they both identical cats? Also, what are your opinions on bolt-on bolt off cats vs. straight pipe for emissions testing.

Thanks

Trending Topics

23+ Regen Strategy & iDash Observations

30

587
Bad trouble with axle shaft snap ring

38

543
This is prolly a 1 page thread at most

110.2k

6M
Shocks for 2024 F250

46

3.2k
F-450 - 2027 vs. 2028?

32

1.2k

Jun 7, 2003 | 06:22 AM

TOBOY

Junior User

Joined: May 2003

Posts: 67

Likes: 0

From: Toronto,ON, Canada

Rear Cat

Well, in regards to passing the emmissions test, I passed it with just the front cat.... I don't have a canner but I'll try to my emmision test result scanned & I'll post it up.

I don't know how different Ontario's emission guidlines are on a 96 Explorer compared to those in the state of Alaska, & Ohio(if any e. testing are mandatory at all)

I guess, as long as you're not in California.... it wouldn't be much different

As for the cat(front only) it went bad so I replaced it with a highflow cat. about a mionth ago. Will be due for another e test soon in July/aug