delete cat or cat/muffler

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Dec 29, 2010 | 08:55 PM

#16

JBSIXGUNS

Senior User

Joined: Aug 2010

Posts: 216

Likes: 0

From: Duncan, OK

i have a straight pipe on mine, no muffler or cat and im addicted to the sound of my truck, its not loud in the cab unless you rag on it, or when you pass someone and hear it bounce off their car lol

Dec 29, 2010 | 09:24 PM

#17

Zip

FTE Legend

Joined: Jan 2006

Posts: 37,918

Likes: 178

From: Princeton, BC

Take it all off.

Dec 29, 2010 | 09:34 PM

#18

JBSIXGUNS

Senior User

Joined: Aug 2010

Posts: 216

Likes: 0

From: Duncan, OK

Quote:

Originally Posted by Zip

Take it all off.

man you sound like my wife

Dec 29, 2010 | 09:39 PM

#19

2006lariat

Lead Driver

Joined: Oct 2009

Posts: 5,406

Likes: 229

From: Pa

Quote:

Originally Posted by JBSIXGUNS

man you sound like my wife

Thats what I say to my wife

Dec 29, 2010 | 09:52 PM

#20

Jasonszion

Thread Starter

Junior User

Joined: Dec 2010

Posts: 82

Likes: 0

LOL I hear yah... So just take off the cat and muffler? Will I register any codes by doing both?

Dec 29, 2010 | 09:54 PM

#21

Zip

FTE Legend

Joined: Jan 2006

Posts: 37,918

Likes: 178

From: Princeton, BC

Quote:

Originally Posted by Jasonszion

LOL I hear yah... So just take off the cat and muffler? Will I register any codes by doing both?

Nope,none,nada,zip. At least in my case I had none.

Dec 29, 2010 | 10:00 PM

#22

amdriven2liv

I'm hitting easy street

Joined: Nov 2009

Posts: 6,395

Likes: 27

From: Central Oregon

I took my cat off when I bought the truck. I wasn't too concerned about any EPA testing where I lived then. Guess what. I moved! So, I put the cat back in because I wasn't sure if they would look for it.

Did they? I don't know. The test was a snap test.

I have since noticed that my milage drop about 1.5 mpg. I've taken it back off.

So, if you are in a state that doesn't check for cats, rip it out. I suggest you keep the cat in the garage just in case!

Or you can take a metal rod and ram all the screening out of it.

Dec 29, 2010 | 10:09 PM

#23

a711112a

Senior User

Joined: Feb 2007

Posts: 182

Likes: 0

Is there a thread on the mileage improvements caused by the various modifications? IE cat removal, muffler removal, egr delete....

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Dec 29, 2010 | 10:13 PM

#24

2006lariat

Lead Driver

Joined: Oct 2009

Posts: 5,406

Likes: 229

From: Pa

Quote:

Originally Posted by a711112a

Is there a thread on the mileage improvements caused by the various modifications? IE cat removal, muffler removal, egr delete....

I just have a full turbo back "offroad" exhaust, and I see no loss or gain in fuel mileage.

Dec 29, 2010 | 10:20 PM

#25

smokersteve

Posting Guru

Joined: Nov 2008

Posts: 1,458

Likes: 2

From: CA Sacramento

Quote:

Originally Posted by plomerostroker

I have had my cat and muff off for over two years. I love the sound and it keeps the egts down. I have not felt any power loss. I think for our trucks it's the best idea.

Yup

I deleted my cat and muffler and love that I did.

less back pressure = lower egts
less back pressure = better turbo spool up
less back pressure = more sound
less back pressure = less resistance on the engine