Go Back   DodgeForum.com > Dodge Trucks > Dodge Dakota > 2nd Gen Dakota
Sign in using an external account
Register Forgot Password?


2nd Gen Dakota 1997 - 2004 Dakota's

Flex Pipe Question

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-09-2013, 09:46 PM
RollerRed RollerRed is offline
Veteran
1998 Dodge Dakota
 
Join Date: Oct 2011
Vehicle: 98 Dakota
Location: Milton, Wa
Posts: 395
Default Flex Pipe Question

So now that my starter is fixed and everything seems to be running smoothly I am going to get rid of my rattling cat. Question is I don't want a cat anymore and was wondering if anyone knows anything about Flex pipes?
http://www.autozone.com/autozone/acc...ier=255970_0_0_

This is what I am thinking in place of the cat. It is stainless and straight through...which should be great for when I slap my new muffler on for sound.
Any thoughts on this?
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
Reply With Quote
  #2  
Old 07-09-2013, 10:58 PM
kingr00's Avatar
kingr00 kingr00 is offline
Amateur
2000 Dodge Dakota
 
Join Date: Jun 2013
Posts: 30
Default

Will taking out the cat have any affect on the O2 sensors?
Reply With Quote
  #3  
Old 07-09-2013, 11:00 PM
moe7404 moe7404 is offline
Record Breaker
Garage is empty, add now
 
Join Date: Jul 2007
Location:
Posts: 1,879
Default

in the OLD days we would take the cat out. then use a heavy metal rod and punch the guts out of it. then put it back in. and it looks like it is fine.. BUT it might have a rattle of funny sound. that was a long time ago. i would not use flex tubing for exhaust. good luck.
__________________
moe
Reply With Quote
  #4  
Old 07-09-2013, 11:35 PM
Brian in Tucson's Avatar
Brian in Tucson Brian in Tucson is offline
Captain
1996 Dodge Dakota
 
Join Date: Mar 2013
Vehicle: 96 DAKOTA
Location: In a hole
Posts: 668
Default

Quote:
Originally Posted by RollerRed View Post
So now that my starter is fixed and everything seems to be running smoothly I am going to get rid of my rattling cat. Question is I don't want a cat anymore and was wondering if anyone knows anything about Flex pipes?
http://www.autozone.com/autozone/acc...ier=255970_0_0_

This is what I am thinking in place of the cat. It is stainless and straight through...which should be great for when I slap my new muffler on for sound.
Any thoughts on this?
Yeah, but not in polite company. Don't you have smog testing in Pierce County? Ya think you'll pass without a cat?
Reply With Quote
  #5  
Old 07-09-2013, 11:36 PM
RollerRed RollerRed is offline
Veteran
1998 Dodge Dakota
 
Join Date: Oct 2011
Vehicle: 98 Dakota
Location: Milton, Wa
Posts: 395
Default

I've read a lot of people do exhaust work and just tie the 2nd O2 up onto the frame and never get any CEL's because of it. I will be leaving both of them right where they are, Just going to cut right at both ends of the Cat.
A lot of cars that I have worked on have flex pipes just like the one I'm interested in to cut back on exhaust rattle. I am really feeling this for simplicity sake...

Also where I live there is no testing, so I am golden!
Reply With Quote
  #6  
Old 07-10-2013, 01:08 PM
hanleysh hanleysh is offline
Professional
2003 Dodge Dakota
 
Join Date: Jan 2010
Vehicle: 03 Dakota Quad Cab 5.9L
Location: Port Royal PA
Posts: 233
Default

You can put a non-fowler on the o2 sensor and it wont throw a code(just moves the sensor out of the pipe so it reads a lower temp) but flex pipe is a bad idea. Not sure where youre located but in PA its only legal on a diesel.
Reply With Quote
  #7  
Old 07-10-2013, 03:20 PM
RollerRed RollerRed is offline
Veteran
1998 Dodge Dakota
 
Join Date: Oct 2011
Vehicle: 98 Dakota
Location: Milton, Wa
Posts: 395
Default

Well its either a flex pipe or just a straight pipe where the cat used to be...
Why is everyone so against the flex pipe though? Straight pipe is similar to a flex pipe, plus for people that have hollowed out their cats you would have noticed a difference in performance and noise I am sure?
Now I'm not looking for a real performance boost, just ease of instalation and to keep cost down. $25-$30 for me to install a flex pipe vs $150 to have someone weld up a new cat...Doesn't that seem intelligent for those that don't need to do emissions?
Reply With Quote
  #8  
Old 07-10-2013, 05:50 PM
LAKOTA169's Avatar
LAKOTA169 LAKOTA169 is offline
All Star
Garage is empty, add now
 
Join Date: Sep 2005
Vehicle: 2005 Magnum R/T, 2000 Dakota R/T, 1937 Plymouth Business Coupe
Posts: 925
Default

Back in the '70's, I had a custom van that I put side exhaust on. To connect the headers to the side pipes, they used flex pipe. It burned through within 6 months. I replaced the flex with solid pipe and didn't have any more problems. It might be cheaper at first, but then add in the expense to redo it again in a few months.
__________________
Caution: Detroit may be hazardous to your health.

Law Enforcement: Sworn to protect your butt, not kiss it.
Reply With Quote
  #9  
Old 07-10-2013, 06:34 PM
dodgeramguy85's Avatar
dodgeramguy85 dodgeramguy85 is offline
Grand Champion
2002 Dodge Ram 2500
My Garage
 
Join Date: Mar 2008
Vehicle: 02 Ram 2500 cummins
Location: Houtzdale,PA
Posts: 5,315
Michael Kokoskie
Default

Its cheaper to get a piece of straight pipe... Use that and be done with it.
__________________
Reply With Quote
  #10  
Old 07-10-2013, 07:32 PM
RollerRed RollerRed is offline
Veteran
1998 Dodge Dakota
 
Join Date: Oct 2011
Vehicle: 98 Dakota
Location: Milton, Wa
Posts: 395
Default

Fine Fine. Straight pipe it is! Just thought I would be different...
So just to clarify you have to pull the rear O2 and put a cap on it when you zip it to the frame? You cant leave it it attached when you cut the cat?

Also on a side note...bad a** van! Wish I had one like that!
Reply With Quote
Old 07-10-2013, 07:32 PM
 
 
 
Reply




Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 04:17 AM.

Internet Brands, Inc.


Contact Details & Emails

Search Engine Friendly URLs by vBSEO 3.5.2