Matt_STi

This popped on yesterday and I took it to a mates who plugged it in and said its my cat that needs replacing.

I have a 2005 WRX STI blob eye, what replacement cat would you suggest?

I currently have a sports cat so would like to replace with another sports cat.


Thanks

Gambit

iTrader: (6)

what was the actual code

Matt_STi

Ah - Not sure. I'll get my mate to plug it in on Tuesday when I see him, so will update then.

scooby_Paul

catalyst efficiency below threshold by any chance?

Matt_STi

I presume so. Will update when I get I plugged in again

scooby_Paul

I bet it just wants mapping to suit.. If it's like most sports cats it will have removed the 2nd cat & is probably confusing the ecu. Usually a mapper can map this out so it doesn't bring that fault code on

Matt_STi

The sports cat has been on for a while and was mapped with it on though? It was on and mapped prior to me purchasing the car though.

scooby_Paul

Ok. This week my mate who's got an 04 sti has a decat downpipe on his & his is mapped but the eml keeps coming on with that fault code. He's been in touch with a mapper this week & he can map it out so it stops it from coming on. Ur cat may not be at fault and could just be something as simple as that. I wouldn't buy a new cat just yet

Matt_STi

That would certainly save me some money, is there a way to find out if it actually is the cat?

Gambit

iTrader: (6)

Yes get the actual fault code

Matt_STi

Will do. Hopefully getting it done on Monday so will update then!

Matt_STi

The code that came up - P0420