cat converters - Ranger-Forums - The Ultimate Ford Ranger Resource

4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

LinkBack Thread Tools Search this Thread
Old 09-18-2007
Thread Starter
Join Date: Aug 2007
Location: Los Alamos
Posts: 64
cat converters

Ive read a lot of posts about adding power by removing the cat converters. Is this true and if so how would i do it? are there kits or what? Help please!!!
Reply With Quote
Old 09-18-2007
5speedin2.3's Avatar
Join Date: May 2005
Location: Livonia, Mi
Posts: 12
no, unless your truck is from the 70's removing the cats will do nothing.

all newer vehicle's come with high flow cats from the factory.

if anything you will lose back pressure and make your truck slower.
Reply With Quote
Old 09-21-2007
04BlackFX4's Avatar
Join Date: Jun 2006
Location: Maine
Posts: 1,159
i dont think it would make your truck "slower" i think you would get a better sound and probably more low end power. could be wrong but letting more air in and letting more air out frees up more power, within reason.

Oh and if you're looking for more power, try getting a programmer or something. Im sure somebody here can give more info than me.

Last edited by 04BlackFX4; 09-21-2007 at 03:37 PM.
Reply With Quote
Old 10-01-2007
GearBoxKevin's Avatar
Join Date: Jul 2007
Location: North Georgia
Posts: 89
I did a back pressure test on my 95's 4.0L upstream and downstream of the twin factory cats with 102K miles on them (with an aftermarket cat back exhaust) . At 4500 rpm the needle didn't move on the gauge. So 0 back pressure with my factory cats.
Reply With Quote
Old 10-01-2007
Mike9825's Avatar
Join Date: Jun 2006
Location: Willard OH
Posts: 489
Unless your engine has forced induction or it's built for drag racing, removing the cats won't gain you anything except a deeper sounding exhaust. -Mike-
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
I am wanting to cut off 2 Catylitic converters Frank91 2.9L & 3.0L V6 Tech 28 04-03-2009 08:18 AM
Do I need 02 sensors if I don't have converters? Needforspeed3685 General Technical & Electrical 9 12-03-2007 01:45 PM
How many Cat Converters does my truck actually have? FMD General Ford Ranger Discussion 16 07-11-2006 04:58 PM
I hate catalytic converters! ericg 4.0L OHV & SOHC V6 Tech 55 01-10-2006 04:59 PM

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

All times are GMT -6. The time now is 03:12 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.