Quote:
Originally Posted by bakerr6
To be honest though, they should be able to see if you are running different fuel grades or different oil viscosities anyways, which the majority of people running tunes are probably doing one or both of these things.
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I thought I saw a poll somewhere on here that showed most of the ECUTek tunes were 91-93 rather than E85. Even if that's the case, I suspect once the FlexFuel kit is widely available, we'll see a lot more ECUTek customers move to E85.
As for oil viscosity, I haven't seen any data. I'm still on stock and don't intend on changing that as I have to deal with northern cold winter climates.
Quote:
Originally Posted by neutron256
The dealer can't tell if you reflash back to stock using their normal diagnostic tools, but there is a way that Subaru (not dealers from my understanding) can tell how many times the ECU has been flashed but they have to be speciffically looking for this.
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Right, that's what my understanding is as well, but if we're strictly referring to the footprint that the dealer can detect, ECUTek claims to be "clean" so long as you reflash to stock.