instead of an autotuner get an ECU flasher from greg aka smithabusa. buy a dl-32 and lc-1 with xd-16 and you will never HAVE to go to the dyno again. you will be able to log your air fuel, rpms, tps, iap and sap for your iap map and tps map. you can also wire in a switch in your MS wire and have 2 maps. one for pump gas and one for race gas or e85. real easy to do and saves yourself a lot of headache in the end.