HONDA ACCORD EXHAUST

I Need To Know If I Use An Aftermarket Header (megan Racing) How Do I Install The O2 Sensor. Will It Effect My Main Computer In The Car?

Can You Install A New Muffler On A Stock Exhaust System?

Would A Shop Simply Install A Part I Purchase, Such As A Cat Converter Or Would I Have To Go Through Them And Their Mark-ups On A Converter...

Hello My Mechanic Says I Need A New Catalytic Convertor. Could You Tell Me How Much I Should Pay To Have It Replaced. Thanks. Samantha