Cutting off 3rd converter? - Ranger-Forums - The Ultimate Ford Ranger Resource
Ford Ranger Forum - Forums for Ford Ranger enthusiast!

Go Back   Ranger-Forums - The Ultimate Ford Ranger Resource Arrow Ranger-Forums Technical Engine Forum Arrow 4.0L OHV & SOHC V6 Tech

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 11-05-2005
jimmclrk1's Avatar
Thread Starter

I am: James Clark
Join Date: Nov 2005
Location: Atlanta, GA
Vehicle: 2002 Ranger XLT
Posts: 158
Total Props: 0
Cutting off 3rd converter?

Was in at my local exhaust shop today getting new tips, and I got to asking about how to get louder. The shop owner told me that for $35 he'd cut off the third converter, and I'd gain some significant volume. He assured me that this was perfectly legal because it comes after the O2 sensors, so I won't get any check engine lights and everything would pass emissions flawlessly. First of all, how legal is this. Secondly, how loud is it going to get?
Reply With Quote
+ 0 -
Old 11-05-2005
I am: Bob Jusnes
Join Date: May 2004
Location: Fuquay Varina, NC
Vehicle: 1996 Bronco
Posts: 3,048
Total Props: 0
not legal, in fact if a shop owner told me it was, i would NOT get my exhaust done there. At least if he had told you that it wasnt legal, that would be decent. There is no reason to mess with the cats on these rangers, there so many because they are a higher flow than they used to be. The performance gain would be negligible if anything, and the sounds wouldnt increase THAT much since on the SOHC youre already going through 3 other cats anyway (i think there are 4 total).

Bottom line is, not legal, no reason to do it, shop owner lied or is ignorant. DONT DO IT!
Reply With Quote
+ 0 -
Old 11-05-2005
n3elz's Avatar
RF Veteran
I am: John Griggs
Join Date: Jun 2004
Location: Kennett Square, PA
Vehicle: SAS'd 2002 Ranger Edge 4x
Posts: 10,620
Total Props: 1
There is an O2 sensor after the last converter. Look again. It's required for the catalyst efficiency monitor -- though I'll look and see if the 4.0 is set up like that.

It won't buy you much if anything because of the design of the converters now. It's not a good idea.

Ha ha! Tell him to put a guarantee in writing that it won't affect anything on your vehicle.
Reply With Quote
+ 0 -
Old 11-05-2005
rwenzing's Avatar
RF Veteran
iTrader: (4)
I am: Bob .
Join Date: Nov 2004
Location: Michigan
Vehicle: 2003 Ford Ranger
Drive Type: 4x4
Engine: 5.0
Posts: 7,773
Total Props: 19
It's a $10,000 fine per occurrence for any automotive repair facility if they get caught removing or defeating any device installed on a vehicle for emission control purposes.
Reply With Quote
+ 0 -
Old 11-05-2005
Trevelyn1015's Avatar
Still El Presidente...
I am: C. D.
Join Date: May 2004
Location: Texas
Vehicle: A Truck
Posts: 4,900
Total Props: 3
every muffler guy knows that is GROSSLY ILLEGAL.

what a loser.

he was just trying to get another $35 out of you.

not to mention, our cats are hi-flow cats anyway...

wouldn't make a difference, really.
Reply With Quote
+ 0 -
Old 11-07-2005
jerrod07's Avatar
I am: jerrod donnell
Join Date: Aug 2005
Location: the dalles, oregon
Vehicle: 2000 ranger
Posts: 94
Total Props: 0
$35! that guy is pulling your leg. i know 1 cat off won't amke a difference.
Reply With Quote
+ 0 -

Similar Threads
Thread Thread Starter Forum Replies Last Post
Before I go off and start cutting, Jrevans2002 DOHC - 2.3L Duratec / Mazda L Engines 5 07-30-2011 02:00 PM
Want to cut off cat. converter 08EscapeArtist General Technical & Electrical 15 11-18-2010 03:35 PM
thinking if cutting it off joshtank New Ideas 17 01-04-2010 11:55 PM
cutting off last cat rizoss16 General Ford Ranger Discussion 15 09-22-2009 02:55 PM
Cutting Flowmaster Off? SteveOh 4.0L OHV & SOHC V6 Tech 16 10-22-2006 01:06 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 On
Pingbacks are On
Refbacks are On

All times are GMT -6. The time now is 04:27 AM.