tuning after fire
 

Ok so I am sooo not looking for flame here and I understand there is some flaming to come BUT... What are the negatives for tuning in a little after fire? I know back fire is bad but I don't see how an after fire is bad for an engine. A fully catless exhaust. So there is no need to worry about destroying your cat. The only thing that is left is the 2 O2 AfR sensors. Will they go out pretty fast? Any serious opinion are appreciated, i know there will be some flame and I completely understand that to lolol no worries.

[ame="https://www.youtube.com/watch?v=YYpRTEcyqGw"]Lamborghini Catches Fire | Flaming Aventador - YouTube[/ame]

You are right, there will be some flame. Bring marshmallows.

If you have a turbo and you're trying to set up anti-lag, sure. It's hard on the header though. If you don't have a turbo then you're just wasting gas for no reason.