One of my catalytic converters is broken, and has thrown a CEL light, its been like this for a few months now, and instead of buying an OEM catalytic converter I think I want to buy two highflow cats, are there any good ones that are specially made for the gs400 so I can just bolt them right on? instead of having to do a bunch of cutting and welding.

If you know of any let me know. thanks

 

ive been trying to figure out that as well. i want to put a hi flow cat on my GS4.

 

I have no cats, i just used post cat o2 simulators.

 

Magnaflow offers a direct fit high flow cat for the 2nd Gen GS. There is a vendor on the site that sells them https://www.clublexus.com/forums/clu...d-x-pipes.html

MagnaFlow Conv DF '00-'04 Lexus IS/GS300 mani
MagnaFlow Conv DF 00-04 Lexus GS300 50 State
MagnaFlow Conv DF 00-04 Lexus GS300 Rear

For more specifications go directly to the Magnaflow site: http://www.magnaflow.com/02catalytic...S300&year=2002

 

Yeah but I need mine for a gs400 not 300

 

Magnaflow offers products for the GS400 as well (http://www.magnaflow.com/02catalytic...S400&year=2000)

You might try searching a little. There are a lot of products out there.

 

can the magnaflow catalytic converter for the GS3 work for the GS4??

 

Lol if you click on your link it says right on the page.. "no products for Lexus gs400"

 

Yeah the site doesn't list direct fit cats for the gs400

 

Where did you get yours from? I'm looking to ditch my cats on a 2004 GS430 and having some trouble finding something that will work for certain.

 

I got 1 bolt on cat from rockauto.com no complaints. Mack sure its a bolt on before you buy.

 

I'm actually very interested in what is shared between the GS3 and the GS4 but I dont think cats would be interchangeable seeing how the GS3 is a 6 cylinder and the GS4 is a V8

 

They are not interchangeable.