That is no joke, $250 for a plug change, another $00 to replace one injector! They will charge you 2 hours of labor for anything they do just about. And
I can personally change all 6 plugs in 15 minutes if they are gapped,20 if they are not, and an injector? Shit, they sit right on top under the fuel rail, an injector is a 10 minute job! But I beat my head on the plenum for a week trying to get her to run right, Tom and the LR Mitsu guys had her for 2 days and got her running great! Now I have a $600 lighter wallet.