A lot will also depend on how muffler friendly the cam is.

30+ years ago I had a Racer Brown STX-19 ground on a 105lsa($20 garage sale find, brand new, ground in 1972)....... ran awesome with open headers....... installed 2-1/2” pipes and turbo mufflers........ and with the same idle speed setting I had been running with the open headers, when you let off the gas the motor died like you shut the key off.
Turned the idle screw way in to keep it running and took it for a drive.
Absolutely awful........ now power, horrible throttle response, appalling gas mileage.
After a couple of weeks I swapped it out for a much smaller Crower solid on a 110, which was a tenth slower at the track(both cams run with open headers), but the motor ran beautifully with the small cam and closed exhaust.