I was at the dealer to have my fuel door checked out and started talking to one of the techs about mods. I told him i was putting it off for the time being because i have heard a variety of stories regarding warranties and most mods will require a flash.
He said that when they plug the ECU into the computer it will pull up a number. They call Subie and read off the number and if that number does not match then your warranty covering the engine will be denied. He said he has seen cars come in with blown engines that clearly had aftermarket downpipes, intercoolers, and what not that had clean codes.
He said some of the guys in the shop use open sourced tunes but have issues reflashing without showing up when they call subie. He said that the ones using the access ports reflash without issue. He said he has seen those cars get engine replacements without issue just because the code came back as stock.
I have a hard time believing all of this. Does anyone know if this is true?