Thanks, who makes a good one?
The LM-1 works well and DaveO had been selling them.
Unlike a dyno-tuning, the data logger can also be used to periodically check on the engine's state of tune and make corrections when necessary as outside temperatures change and/or as parts begin to wear. If you decide to change boost levels, the data logger can be popped on to retune as required. Additionally, tuning as per the data logger provides for real-world running conditions (unlike the stationary dyno-tuning), which means your engine and its sensors won't be giving false heat-saturated readings since they'll be staying MUCH cooler by the constant influx of airflow across them while riding out on the streets. The dyno simply cannot touch the state of tune that a data logger can provide and the data logger is a one time cost that's not all that much more than most dyno-tunings. Just food for thought...