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      11-29-2021, 04:38 PM   #88
IllSic_Design
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Drives: 09 E92 335i
Join Date: Jun 2016
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Quote:
Originally Posted by SoCalDodgy View Post
Sorry. You're right, I should've been clearer: it's not a piggy back, but a bench tune where the ECU was pulled from the car for the update. No extra hardware, not a piggyback tricking the car into making more boost based on tweaking the sensor input. They claim the checksums match--it's also been out there for a while, and maybe was picked up as an OK variant by the DMV? Just guessing here and throwing out one more data point for what it's worth.
oh ok, yeah that's awesome if so. Another forum member posted in a similar thread about N52 tunes that it is possible to get the checksums to match or atleast look like they match on a custom tune, but he hadn't done it or looked too much into it as that's a federal felony if caught.
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