thank you great work on my catalytic converters on my town car and you save me $600.00 over midas

when to 6 area mechanics and 3 month later and 500.00 dollars plus and my car still did not run right. i stop at julio garcias shop and 1 day later my car was fix right and under 400.00 dollars.it was a knock sensor. great computer diagnostics and julio alone has over 40 years experience