I posted a thread yesterday with regards to back fire but i forgot to mention that the check engine light has come on twice in the morning on the way to work around 3-4 miles in to the trip. why would the check engine light come up?
Thanks for your help guys.

 

my sti Had a decat and remap and the light came on. So I went back to scooby clinic and had a CEL fix. Now its on again. I wouldnt worry! If its running right its probably just a cat missing fault. Get a diagnostic to make sure.