The comment you quoted is explaining why it is likely that an OEM (Tesla) would reject warranty claim based on tuner modifications (Saleen). This is exactly the point "autthor Frederic" was making in his article. BTW have you seen his most recent article about Saleen? http://blacksheepplanet.com/index.php/2015/05/14/saleen-automotive-lost-84-of-its-value-year-to-date/