Okay, Im gonna remove the pre cat. I have searched on here, read the benefits and know how easy it would be to do.
I want to remove the main cat aswell, I have seen one bloke on here who has made a neat cut into his cat removed the internals and TIG welded back up to a standard which makes it very un-obvious that it has been fettled.
The part I am questioning is that I know pre cat removal may put CEL on but its very unlikely and main cat removal will definitely through it up. Now I understand that this is mapped out when upgrading your car to stage 2 to software, I plan on going stage one in the coming months so I should be able to get it done then? I understand that it is just coded out on the ECU. I can put up with the CEL light being on but I cant put up with the car going into limp mode, which it shouldn't do? Or will it?