Car Guys Auto Care

I have taken cars here before for A/​C recharge and they did a good job. The other day I replaced a cracked Exhaust Manifold on my Daughters Jeep and it began running horribly. I checked the exhaust system and Vacuum System, but I couldn’t find the problem. So, so I took it to them.
When I dropped it off I specifically said «Don’t just start replacing parts to see what fixes it. If you can’t diagnose the problem, I’ll find somebody that can.» They assured me that they could. Later they called and said it need a Fuel Filter. I told them that I replaced it an hour ago. They called back and said it needed Plugs, Wires, Cap & Rotor. I said I doubt that’s what it is but if that fixes the problem…, Fine.
They called and said it was ready, so I went to get it and it still ran like crap! They said, «Oh no, It’s a lot better.» WTF? I reused to pay for any labor for their «Technician.» I paid for the parts, which were 2X the price at Auto Zone and I got out of there.
I went home and did some research on the Internet. I bought a new MAP Sensor at Auto Zone for $ 60. I plugged it in, The CEL went out and the Jeep now runs perfectly! They may be qualified for an Oil Change or an A/​C Recharge, but that’s about it!
Beware of this place!