Originally Posted by JDMLOL
Like Alex said. Every gt gets the same calibration from the factory. If undesirable results coming from generic tunes were that big of an issue they would all get custom tunes. I mean even carburetors had "factory" jet/screw settings for a particular engine. I wonder what Ford's defect rate with their tune is compared to __________ Performance shop's tune?
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All the cars are built and toleranced within specs so that the tunes will work fine. When you start modifying the ECU and PCM calibrations, you don't know how close to the edge you are, depending on how your motor sits inside of the tolerance window...especially if you start modifying it.
All I'm saying is that I would rather someone actually take the time to look at, and diagnose my datalogs to see if there are any issues.
Just because the suit fits you, doesn't mean it's the best fit.