Use your impact to disassemble components that need that much torque , the air rachet for smaller things , and remember that with the speed air tools can spin , nuts and bolts can seize when coming off too , and pull threads from the heat produced . I've been at it for well over 35 years annd beleive me , Impacts have their place , but most motorcycle work I do is done with T handles & 1/4 inch drive stuff ... With time you will develop a feel for air tools , but your stronger than just about any impact gun . And I've got a couple of the best/strongest ones made ...
Glenn