Those of you that are into modding, tuning and car experiments, you will come to appreciate this article. Jonah, a reader of our online magazine, has decided to upgrade the turbos in his 335xi. My car (08′ 335xi) is currently under the knife having the first set of TiAL Sport upgraded turbos installed. I will essentially be the first customer car with upgraded turbos who is actually vocal and talks about what is going on (compared to say the ASR upgrade which supposedly has sold 10 times but no one has ever mentioned a word about them). The upgrade consists of a custom compressor and clipped turbine. | 
