What else do I need to effectively tune the UTEC?

While tuning can be done solely on the road, tuning is most effective when done on an AWD dyno combined with road tuning. For the most accurate fuel tuning you will need a good wideband O2 sensor that is accurate down to at least 10:1. The UTEC logs AFR from the front O2 sensor, but it is only accurate down to about 12:1, which is too lean for normal pump gas. Narrow band AFR gauges that work off of 1V O2 sensors are useless for accurate fuel tuning. Alternatively, you can use a good EGT gauge for fuel tuning. Also, for accurately tuning the UTEC's Knock Correction system, some form of knock amplification/detection hardware is required. TurboXS is working on a WBO2 and knock detection hardware so we can provide you with all the tools you need to tune your WRX.