Hi there. I have an '03 blob eye WRX. STOCK. This is a company car and i want to remove both cats. I have bashed out the cats from other cars i have had and it has made quite a difference. What i want to know is:
If i bash out the cat internals on the front two cats will the CEL light come on?
If so how do I get it off again and how much will this cost?
Is this mod worth doing?

The reason i want bash out the cats is that it looks stock from the outside and it is a company car after all - noticable after market de-cat pipes are not an option for me i'm afraid.

Any help, advice or general knowledge will be greatly appreciated, besides - gives me something to do on a saturday afternoon and keeps me from shoe shopping with err indoors!!!!

 

 

Actually wee buns, very easy to do. A little elbow grease does wonders, can't afford remap yet- married in two weeks, but along the right lines.

 

Make sure you remove the rear lambda before you knock the cat out of the downpipe

You'll still have the stock metallic pre-cat present in the turbo uppipe, but this probably won't be enough to stop the CEL coming on, and a P0420 (Cat efficiency below threshold) from being recorded.

The code can be permenantly disabled in the ecu, but ideally, you'd still need to remap, as the turbo will probably want to overboost as it spools up, due to reduced EGBP.

Proceed with caution