03-07-2019, 08:57 AM
Few make one change at a time so all observations are clouded. And for most Seven owners what happens beyond 4000 or even 3500 rpm is of little interest so gains beyond that not relevant to them.
There are a myriad timing gears about and I often wonder what actual timing is on other cars.
There are a myriad timing gears about and I often wonder what actual timing is on other cars.