Crank relearn is usually available on low end bi-directional scan tool and the fuel/alcohol composition is usually available too in most scanners that use all the PIDS. I have a tech 2 as well as the later MDI but I have other scan tools as well. I can tell you for a fact that any snap on will do it (buy a used one off ebay) and I have an Innova 3160 (I think) that has the function. Quite a few Chineses clones of Tech2's out there - they are garbage - but for light personal use they may work. You take the risk.