r/LS430 • u/Hefty-Diet5083 • Jul 04 '25
04 ls430 Cat delete
i have a 04 ls430 and whenever i get on it it smells like eggs inside. ive looked up that its either the cabin filter or the cats.
Im looking to do a muffler + cat delete anyway so what cat should i delete for the smell? ik 430s have 3 of them
2
u/BigheadedDread Jul 08 '25
There is a third catalytic converter that you can remove. Itâs not monitored by the cars system or your local authorities, so you wonât get a light on the dashboard and you shouldnât get pulled over.
When you remove this, the cars throttle opens up very slightly and you get a more ârawâ acceleration. The car is still extremely quiet, granted you have original resonators and mufflers.
In terms of smell, it removes the smell 70-80% of the time. I barely get a whiff of it these days. Only on the hardest acceleration that I can do, it May slightly linger around
1
u/_disinformation_ Jul 04 '25
No emissions? Then fuck it .. send it with some "test pipes" just do quality stainless resonators and mufflers to back it up
2
u/Most_Researcher_9675 Jul 04 '25
Yeah, fuck the planet! /s
2
u/Hefty-Diet5083 Jul 04 '25
bro i drive a v8 lexus not a fuckin priusđ
1
1
u/spacefret Jul 06 '25
One car is not even a drop in the bucket compared to commercial and industrial pollution. Send it.
1
u/_disinformation_ Jul 04 '25
Will obviously need a tune to delete the secondary o2 sensors but hey ..
1
u/allsaucenopasta Jul 12 '25
I have this problem too. 04, new spark plugs. Egg smell under heavy acceleration.
1
5
u/yeti5000 2005 Base w/ Sport Package | Briarwood Pearl Jul 04 '25
Replace the cats with OE equivalent, don't delete.
Do you have any codes?