Thanks. I did manage to run across them when doing more research. I also found a dealer on one of the forums that can give a slightly cheaper price...
I have Service Measure B65 209 04 which identifies the problem with the BM53 radio, nav, and DSP interfering with each other. (Radio Service Measure)...
The WRX and Evo are all wheel drive, so they get off the line much more quickly than the 335. They don't have the same power so they can't build...
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