I have a 2003 Lexus IS300.Took my car for emission test and failed. One shop replaced oxygen sensors.That didn't work. Lexus dealer wanted to charge me over $3000.00 to replace wiring harness.My uncle who knows Gene for over 13 years now gave me Gene's number. Took it to Gene's Auto Repair. I was told by Gene that, all I need is a new thermostat. He showd me the old damaged one. Replaced thermostat and passed emission test. Gene is the best.