Hi can anyone confirm if you put a 200cel sports cat on the down pipe will this affect the sensor causing the engine management light to illuminate?
If a wrx hawk is decatted will it exceed the emissions?

 

Yes and yes. Altho any mapper will be able to remove the MIL, and you'll be needing it remapped once its decatted anyway.

 

Thanks

 

Any Ideas on the cat?

 

The original post has changed to a different question now lol?

A sports cat in theory shouldnt cause the MIL to come on, however depending on how good the sports cat is i have known it to still cause problems with aftermarket ones. Going back along the lines of your original question again though, if its caused a problem it could be mapped out so not really a problem as again you would still need a remap after fitting a sports cat

 

Is there a noticeable difference in power?