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Not mind-blowing, I'm sure. However, from what I've gathered, 231E is when the most significant changes to the factory software occurred. So, if you're prior to that and you upgrade, you should see noticeable gains. Based on dynos in the 231E thread, people have seen as much as 20 hp gain when transitioning from prior to 231E to 231E or higher.
Also, since posting in this thread previously, I've done some additional research. Based on the key read I got done at the dealership this last year, I'm on integration level E89X-07-12-515. Based on that and on Benvo's software version thread, that would make my car's software pre-060 and pre-080. As it turns out, it's what is identified as "Legacy". It's the earliest software which can be on our cars. Makes sense, since it's a launch car.
So, hopefully, with such a great number of software versions between my car's current version and what has most recently been released, I'm hoping for a noticeable increase in power, smoothness, etc.
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