I had been having trouble with a P0420 code in my Subaru Outback for quite some time. I had been recommended by Jay @ Jay's Kustom Exhaust and Muffler to see Mike Oliver. Upon understanding my ongoing situation with the car Mike had me come back in a couple of weeks when he had some free time to look at it. The end result was me needing a new catalytic converter. He didn't even charge me for the diagnosis. That was awesome. – Jan B (5 star review found on Yelp)