How To: Catalytic Converter Delete For Less Than $20
So I was having some problems with lack of power in my car and tracked it down to the cats being clogged I pulled them off and one was completely destroyed inside. I start shopping around for a new one and they're like $200. I did what any logical person would do and decided to just get rid of them. Here's what I did...
To take off the catalytic converters there's a good how to on lexls.com http://www.lexls.com/tutorials/exhaust/fpipe.html First off all the material 2 bad catalytic converters 2 2 1/2 ID 18" tailpipes (I got mine from autozone for $7 each) Metal cut off discs (I went through 2 on the angle grinder) Welder Grinding wheel Exhaust gaskets http://i16.photobucket.com/albums/b4...ps87659613.jpg First you're going to cut off the brackets from the cats, you can buy them on lextreme for like $60 if you want, but I figured I have a free set so I used those. http://i16.photobucket.com/albums/b4...ps7483e752.jpg After you got them off grind them down so they look nice and shiny, if you notice the two brackets on the bottom have rings inside from the excess tube you want to keep at least two. But you want to keep the ones from the 2-hole brackets. http://i16.photobucket.com/albums/b4...ps5b04acb7.jpg After you have the brackets cut off and ground down, you're going to get your tailpipe pieces and grind off the galvanization on one end. The pipes I got have one flared end, that's the first side I used http://i16.photobucket.com/albums/b4...psdf29bc8b.jpg Now get the 3-hole bracket and put the pipe in it, the bracket has to be up a little about 1/4" http://i16.photobucket.com/albums/b4...ps92c2f70b.jpg Put a couple tack welds on (something breakable in case the they're not in the right spot) http://i16.photobucket.com/albums/b4...ps525954eb.jpg Now the cats are 10" end to end but just to be safe I cut the pipes a little long about 12" http://i16.photobucket.com/albums/b4...ps7cd70a7d.jpg Do a quick test fit to make sure it'll fit flush on the manifold http://i16.photobucket.com/albums/b4...ps6499e8e0.jpg This is where my camera died, but next you're going make sure it fits then cut it to the right size, 10" next you grind off the galvanization from the tips again. Do another test fit to make sure everything is going to fit. http://i16.photobucket.com/albums/b4...ps676cfc89.jpg Mark on the tabs where the brackets are so you can tack it together in the right position. This is where those rings from earlier come in. I think the metal from the cats were thicker then the new pipes, so the pipes fit perfectly inside the brackets with the rings in them. Tack the brackets together and do one last test fit http://i16.photobucket.com/albums/b4...ps841c7b76.jpg After everything is test fitted, go ahead and weld it together http://i16.photobucket.com/albums/b4...psfb611ad5.jpg And you're finished product http://i16.photobucket.com/albums/b4...ps79845333.jpg You can stop there and bolt it on or you can clean up the welds and paint if you want. I wanted to http://i16.photobucket.com/albums/b4...psb228d888.jpg Then bolt it up and enjoy your easier breathing Lexus :woot: http://i16.photobucket.com/albums/b4...pse2c316cc.jpg |
How is the exahust clearance under the car? same as stock or tucked up?
|
does it affect your 02 sensors?
|
Nice write up i was going to do this anyway without bad cats. Did you see/ hear results
|
Originally Posted by 240benzo
(Post 7932235)
How is the exahust clearance under the car? same as stock or tucked up?
I'm not sure about the o2 sensors my cel has been on since I got rid of my egr, I haven't checked the codes yet to see if anything new has popped up. And it sounds a little deeper but not much of a difference, from what I understand these cats are fairly unrestrictive so I don't think you get much gain from deleting them if they're still working |
You will have code 420 and 430 stuck on unless you get the 02 simulators. Considering it is bad for the environment and very minimal HP gains, I am a fan of just replacing failed converters with aftermarket ones. I'm not a tree huger but driving behind a car with no cats is... :thumbdn:
|
Hows the smell?
|
Originally Posted by Lavrishevo
(Post 7932551)
You will have code 420 and 430 stuck on unless you get the 02 simulators. Considering it is bad for the environment and very minimal HP gains, I am a fan of just replacing failed converters with aftermarket ones. I'm not a tree huger but driving behind a car with no cats is... :thumbdn:
Originally Posted by Dranom
(Post 7932827)
Hows the smell?
|
LS cats tend to be extremely reliable, and the car has more power and reliability with them than without them.
If this were a good plan, mine would have been off long ago. It's not. |
I had the Cat Eff code and it came and went...I got tired of clearing the light so i threw in some FJcruiser cats i had sitting around and had the resonators removed and it sounds perfect and runs great. Cant hear it really. when your in it you hear a little bit. A good cat wont kill power. A failed cat will.
|
Originally Posted by LScowboyLS
(Post 7933197)
LS cats tend to be extremely reliable, and the car has more power and reliability with them than without them.
If this were a good plan, mine would have been off long ago. It's not. It's kind of like having a napkin over your mouth while breathing, no matter how much it air it flows you're going to breathe better without it. I am in no way saying this is a performance mod, rather an alternate to replacing expensive damaged parts |
Can you just gut the Cat, put a tail pipe inside of the cat, and then put the cat back on the car?
|
yeah probably but then you can't recycle them and get your money back
|
i would have started the car with open downpipes like that and recorded a video for kicks! good work on the craftsmanship. clean welds!
|
So, I'm guessing you have no plans of passing the state inspection legally?
|
All times are GMT -7. The time now is 07:46 PM. |
© 2024 MH Sub I, LLC dba Internet Brands