Killed a cat (gutted converter) *pics
#1
Killed a cat (gutted converter) *pics
A long time ago, when I first joined, I was pondering gutting my rear most cat...
Well after mush discussion I was informed that the ranger came with high flow cat converters, well I bought it and didnt touch the exhaust but months later I took another look at the box and took a look on the inside and if thats high flow then id hate to see restrictive. It probably accomplishes its environmental task just fine but logically it looks beyond restrictive.
So out came the tools.
BEFORE YOU DO ANYTHING REMOVE O2 SENSOR. be safe and smarta
The "mesh" inside it about 8-9" deep (guesstimating)
and actually very thick
tried a screw driver and hammer...not easy
long crow bar and hammer...too heavy
metal piper and hammer..just right (practically cuts circles out of the mesh and you can remove and dump it into piles)
then take a vacuum and ram it on up in there and suck away (tehe)
last but not least, turn truck on and allow to idle for a minute as you re vacuum with the truck on, then remove vacuum and rev it just a little x< 3000
That easy
Pictures:
Well after mush discussion I was informed that the ranger came with high flow cat converters, well I bought it and didnt touch the exhaust but months later I took another look at the box and took a look on the inside and if thats high flow then id hate to see restrictive. It probably accomplishes its environmental task just fine but logically it looks beyond restrictive.
So out came the tools.
BEFORE YOU DO ANYTHING REMOVE O2 SENSOR. be safe and smarta
The "mesh" inside it about 8-9" deep (guesstimating)
and actually very thick
tried a screw driver and hammer...not easy
long crow bar and hammer...too heavy
metal piper and hammer..just right (practically cuts circles out of the mesh and you can remove and dump it into piles)
then take a vacuum and ram it on up in there and suck away (tehe)
last but not least, turn truck on and allow to idle for a minute as you re vacuum with the truck on, then remove vacuum and rev it just a little x< 3000
That easy
Pictures:
#8
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#11
I did the same thing a long time ago. I was told 4.0 OHV's "last cat" is actually a resonator...my friend removed his and it is very powerful sounding. I noticed very minimal added sound and very minimal(if non-existent) power gains. Then again, I've got 4 freaking cats under my non-California truck. lol.
I used a 1/2"x18" breaker bar, but mostly used an 18" prybar and mallet. I got all that honey comb out...every little bit of it.
I used a 1/2"x18" breaker bar, but mostly used an 18" prybar and mallet. I got all that honey comb out...every little bit of it.
#14
#15
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RangerSplash4.0 (01-16-2024)
#16
way to be rude, smartass, there is multiple cats on a truck and I am in a state that does not exhaust test. 1 cat was removed, not all. How about you be less of a dick, just move on, your opinion is your own...but its wrong (:
The following users liked this post:
RangerSplash4.0 (01-16-2024)
#17
If you follow automotive laws you must have one ugly truck. Breaking the law allows a better looking vehicle. Also the Main cat on the 4.0 is un monitored so why the hell is it there doing nothing. My truck isn't a cali emissions truck.
Last edited by Taylor; 05-04-2012 at 05:05 PM.
#18
hahahaha this is funny. the xj forum I'm on, talking about gutted cats or removing them, is a big no no. although I run catless on both jeeps I've owned, one had a clogged cat, the other didn't come with one on it when I bought it. gutting or removing the cat on a ranger isn't a huge deal (unless you live in california), especially if it has multiple.
#23
Just thought I would say one last thing, straight piped vehicles actually make more horses but make significantly less torque. and back pressure is a major factor contributing to negative mileage among other things. so running fully straight piped from headers back would make me the most mpg and the most hp on an otherwise stock vehicle. the gains would be so negligible BUT thought id 1up you again
#24
Just thought I would say one last thing, straight piped vehicles actually make more horses but make significantly less torque. and back pressure is a major factor contributing to negative mileage among other things. so running fully straight piped from headers back would make me the most mpg and the most hp on an otherwise stock vehicle. the gains would be so negligible BUT thought id 1up you again