Tried searching to see if this had already been discussed and had no luck, so...

In '01 I bought an 02 WRX I put an MRT exhaust on it which caused the check engine light to come on. I had the car Ecuteked and after that no more problems.

Move to today, in March of 05 I got my STI. It is currently stock but I would like to put an exhaust on it, will the STI give me the same issue with the check engine light (I have no interest in having the car flashed)?

I am sure some of you put in a new exhaust and wanted to see if your light started to come on.

Thanks