exhaust
 

Hey guys I'm thinking of buying a catless racing beat exhaust but I was wondering how to avoid the check engine light from illuminating. And also what oil would be recommended 10w30 or 20w50.(idemitsu oil) thanks I'm a beginner. The car has 87000 miles

Keep it stock, and you won't get the check engine light. I use 10w30 and no serious issues so far.

Answer to question 1 is in the 2nd thread in my sig

Answer to question 2 is in the 1st thread in my sig.

Both threads are stickies in this subforum.