... top model of German car producer BMW. ATT tuner called its new power car Thunderstorm M3. ... you cannot estimate the scope of retrofitting, but the design is definitely not too stylish. Moreover, ATT has paid attention to powerful performance tuning. The ... including installation. In order to correspond to driving performance, ATT gives its an upgrade in chassis. Now, KW coilover suspension Variant ...

Autotechnik + Tuning (ATT) has introduced a new tuning package for the BMW M3. Known as the Thunderstorm M3, the model receives an inbuilt compressor with engine software optimization that greatly increases engine performance. Power is upgraded to 500-hp, which should definitely give you a significant boost when you step on the accelerator. No performance figures