Nice software! "no difference in the way they work". I would have to disagree with that statement for a number of reasons. The Moates Ostrich is a much better solution than NIStune IMO. For one, the Ostrich has it's own dedicated USB port and is *much* faster (100x). NIStune uses the CONSULT port which is painfully slow at reading and writing ECU data. Secondly, since NIStune uses the CONSULT port, it has pause the data stream for ~500ms every time it writes. There is a 'hiccup' where no live data is received for ~500ms. This kind of defeats the purpose of 'real-time' tuning when you can't see an immediate result! This is not a problem with the Ostrich as the data stream doesn't have to be stopped. Thirdly, the Moates Ostrich verifies the integrity of everything written to the ECU with a checksum. This guarantees that no bad values ever get written. NIStune has no such checksum feature, and will happily write corrupt values to the ECU, leading to potentially disastrous results. One failure I've seen with corrupted NIStunes is the ECU turning on the injectors 100% and dumping fuel until the battery is disconnected. Taking the key out of the ignition doesn't help. YIKES.
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