Welcome to Rocky Mountain Solo › FORUMS › Novice Help / Getting Started › Classing help. BMW M4 Convertible
What class would I be in?
Minor mods :
Dinan Exhaust
JB Stage 1
BMC drop in air filters.
Thanks in advance. I have participated in the past with an 03 RSX Type S and in 2017 with my 228xi
If the “JB Stage 1” is a tune, I think STU would be the correct class, as long as the Dinan exhaust still retains cats.
Thanks. It is a tune. And I have all cats still installed
appreciate it. I will likely register for the next event and run it on my winter tires…