AFAIK the bowden cable controls the shift points, vacuum controls shift firmness. If you disconect the bowden cable it will shift as early as possible, no vacuum and it'll shift as hard as it can. Then you can shift manually to delay the shifts
AFAIK the bowden cable controls the shift points, vacuum controls shift firmness. If you disconect the bowden cable it will shift as early as possible, no vacuum and it'll shift as hard as it can. Then you can shift manually to delay the shifts