I don't have a good answer for you. It can be just RPM's or RPM plus load (like the fuel system, alpha n)Iscadean said:Thanks. I looked up the BMS-K and the Can-bus info and it does seem complicated. The flap must be controlled however by some data - any idea what that is and how it determines the opening and closing? Is it based on revs? Or something more complicated?
I think you are right.Skidmarc said:I think it's there to control back pressure, and thus the torque curve. But I could be wrong...
This constantly adjusts the internal diameter of the exhaust system to suit engine revs and ensures good low to mid-range performance for a linear power output all the way to the rev limiter.
You are not alone......I always wondered myself.Iscadean said:Thanks everyone. It was a silly trivial question I know, but you seem to have answered it. I'll listen intently now when I breach 4k on the rev counter.![]()