because when lads like myself grabbed the safc/sitc combo, emanage was over a grand and no-one really knew how to tune them (in adelaide at least, can pass a few stories to you about blown engines and electronics, etc). so, 30months back, it wasnt a viable option.
personally, from all research, the re-written ecu chip is as good a "mod" as a tuned Power-fc. just that it cant be retuned on the run as per the P-fc. no point in ripping out the safc/sitc combo, and installing emanage as it isnt cost effective, frankly.
safc $350 new, sitc $250 new, chip $750 installed, tuning. same price as power-fc at the end of the day, with similar results (albeit stock injectors.....). even if you do the emanage, the re-written chip would still be of good benefit to do.
chip / adapter has been posted, so will get it fitted in the next 2 weeks, and tuned on 19th June. results will be shared.