GPGTX2000, Use Ryan, he knows what he is doing and is alot cheaper than going to a full tune shop. He only cost me like $100 vs $500+ at a tune shop. I am happy with the job he did on mine. Alos if you are not using the injector off the L67 switch to them, befor the tunning. With the access to all the ifo threw the touch screen you do not even have to have a high end diagnostic machine.