ghorn

Anyone have thoughts on ECU flashes (ODB-II or non-ODB-II) for Gen 4 GSes? Love the car, but think it could be both more powerful and efficient than it is. Specific ones you've tried that have worked well? I'm not someone who's into modding the car much. I have a 2015 F sport that's very stock other than the SkipChips wrap. Thanks for any advice!

e60bmw

iTrader: (1)

I was very happy with the RR Racing tune. Made the power really smooth with acceleration, hard to explain it. Should have come from the factory like the way it makes it imo. It also raises the RPM if you want, I'm not familiar with other tunes but a number of people have that one.

isfvss

RR Racing are your one stop Lexus shop.