Long story short...i had a major exhaust leak, had my brother fix it but I still have a minor leak (audible from outside and inside the car).


so.....


How much gas mileage am I actually loosing if any?

How much power am I actually loosing?



If anyone has a data chart or any proof of declined gas mileage or power due to an exhaust leak, it would greatly help. I don't just want guesses because that means nothing. thanks.