|
Roy, I would buy both together. I currently have BM3 uninstalled on my x3 because it was in for service. Trans acts a little rough in under medium throttle conditions because it gets confused with the high flow downpipe and the noise that the turbo makes before it spools up is incredibly annoying.
__________________
2016 X3 35i |M-Sport|Megan Racing Coilovers|FBO+|BM3|Jordan Tuned|Valvetronic Designs|
1998 750iL V12|2017 440i|2019 991.2 GT3RS Weissach|2019 Model X|...and some others
Instagram @TheCoolX3
|