Originally Posted by 335twins
Bought a cobb ap for my 335i, being stock with drop in filter should i run stage 1 sport or drive? I'm in Arizona with crappy 91 octane?
With ACN 91 I.could only run Sport with 20% E85. But log Sport and see if Car is happy. But also 20% E85 I could run Agg.
See rader1 thread, the timing corrections was based upon my build and logs