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Your definitely going to get a flash count, If you are looking to tune your car and try to trick the system I would advice not tuning at all the gains you are going to get on a stock NA car are minimal.
As to Answer the unanswered in cellsafemodes post
Yes Overkill can tune the TCM shift points etc.. As for the different tunes based on touring or sport mode I cannot tell you as I woudnt want this anyways.
Overkill tune is not locked however its advised once your dialed in not to mess with it. But you could easily flash back to stock then go back to the overkill tune if needed with the autocal tool.
As far as ease of use its pretty basic if you can click some buttons and follow the printed out instructions you would be provided with I would say its no more difficult then any other tune.
I am not against trifecta by any level... I am more of a personalized feel kinda guy I like the feel of knowing someone is there to help and answer my questions and that its the guy doing the tuning.
Not sure on the tool but from my use of the autocal you could flash any tune you wanted provided by another tuner.
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