system: J3 chip
Pro's: Much like the Xcal3 system. Chip plugs into the
ECU. Can store multiple tunes. Tunes can be selected on the fly provided the switch is hooked up with it. Chip is cheaper then the Xcal3. ($120 for the actual chip i believe).
Con's: Perhaps not as many tuners use this compared with other alternatives
Also, i looked into this which was i could get the j3 chip pre custom tuned. All i needed to supply was a dyno printout, list of mods and other small details like smartshield/smartlock, series 1,2,3 etc. The tuner could then take all this into account, look at the dyno sheet and pre tune the chip. This is A LOT CHEAPER then a custom dyno tune, but obviously wont yield the same results as the custom dyno tune. but a tune on a budget this would be a great way to go.